Dell Precision 7920 Tower Owner's Manual
Working on your computer
Removing and installing components
Technology and components
System specifications
System Setup
Software
Troubleshooting
- Dell Enhanced Pre-Boot System Assessment — ePSA diagnostic 3.0
Contacting Dell

DELL T7920 User Manual

Displayed below is the user manual for T7920 by DELL which is a product in the PCs/Workstations category. This manual has pages.

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Dell Precision 7920 Tower

Owner's Manual

Regulatory Model: D04X

Regulatory Type: D04X001

Notes, cautions, and warnings

NOTE: A NOTE indicates important information that helps you make better use of your product.

CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.

WARNING: A WARNING indicates a potential for property damage, personal injury, or death.

trademarks may be trademarks of their respective owners.

2017 - 10

Rev. A00

Contents

1 Working on your computer............................................................................................................................. 7

Safety instructions............................................................................................................................................................. 7

Turning o your computer — Windows 10.....................................................................................................................7

Before working inside your computer..............................................................................................................................8

After working inside your computer.................................................................................................................................8

2 Removing and installing components............................................................................................................. 9

Screw size list..................................................................................................................................................................... 9

Recommended tools........................................................................................................................................................ 10

Power supply unit (PSU)..................................................................................................................................................11

Removing the PSU......................................................................................................................................................11

Installing the PSU........................................................................................................................................................ 11

Side cover...........................................................................................................................................................................11

Removing the side cover............................................................................................................................................ 11

Installing the side cover..............................................................................................................................................13

Air shroud...........................................................................................................................................................................13

Removing the air shroud............................................................................................................................................13

Installing the air shroud.............................................................................................................................................. 13

Removing the air shroud fan..................................................................................................................................... 14

Installing the air shroud fan........................................................................................................................................15

Front bezel.........................................................................................................................................................................15

Removing the front bezel.......................................................................................................................................... 15

Installing the front bezel.............................................................................................................................................17

PCIe holder........................................................................................................................................................................ 17

Removing PCIe card holder ...................................................................................................................................... 17

Installing the PCIe card holder.................................................................................................................................. 18

Intrusion switch.................................................................................................................................................................18

Removing the intrusion switch..................................................................................................................................18

Installing the intrusion switch................................................................................................................................... 20

Front system fan assembly..............................................................................................................................................21

Removing the front system fan assembly............................................................................................................... 21

Installing the front system fan assembly.................................................................................................................24

Internal chassis speaker...................................................................................................................................................24

Removing the internal chassis speaker................................................................................................................... 25

Installing the internal chassis speaker......................................................................................................................26

Hard disk drive and the Optical disk drive bezel.......................................................................................................... 26

Removing the HDD and the ODD bezel..................................................................................................................26

Installing the HDD and the ODD bezel.....................................................................................................................27

Hard disk drive assembly.................................................................................................................................................27

Removing the HDD bracket......................................................................................................................................27

Installing the HDD bracket........................................................................................................................................ 28

Removing the HDD....................................................................................................................................................28

Installing the HDD...................................................................................................................................................... 29

Contents 3

Front input and output bezel.......................................................................................................................................... 30

Removing the front input and output bezel........................................................................................................... 30

Installing the front input and output bezel...............................................................................................................31

Front input and output panel...........................................................................................................................................31

Removing the front input and output panel............................................................................................................ 31

Installing the front input and output panel..............................................................................................................34

Removing the input and output panel bracket.......................................................................................................35

Installing the input and output panel bracket......................................................................................................... 36

Rear system fan............................................................................................................................................................... 36

Removing the rear system fan................................................................................................................................. 36

Installing the rear system fan....................................................................................................................................38

Right side cover............................................................................................................................................................... 38

Removing the right side cover................................................................................................................................. 38

Installing the right side cover....................................................................................................................................38

Slim Optical Disk Drive.................................................................................................................................................... 39

Removing the slim ODD and ODD latch..................................................................................................................39

Installing the slim ODD and ODD latch.....................................................................................................................41

Power distribution and fan control board...................................................................................................................... 41

Removing the power distribution and fan control board....................................................................................... 41

Installing the power distribution and fan control board......................................................................................... 42

Front HDD Fan Bracket...................................................................................................................................................43

Removing the front HDD fan bracket......................................................................................................................43

Installing the front HDD fan bracket........................................................................................................................44

Fan bracket.......................................................................................................................................................................44

Removing the fan from the fan bracket..................................................................................................................44

Installing the fan into the fan bracket......................................................................................................................45

Graphical processing unit(GPU).................................................................................................................................... 46

Removing the GPU....................................................................................................................................................46

Installing the GPU...................................................................................................................................................... 47

Memory............................................................................................................................................................................. 47

Removing the memory module................................................................................................................................ 47

Installing the memory module...................................................................................................................................48

Coin cell battery............................................................................................................................................................... 48

Removing the coin cell battery.................................................................................................................................48

Processor heat sink module............................................................................................................................................50

Removing the processor heat sink module.............................................................................................................50

Installing the processor heat sink module................................................................................................................51

Removing the CPU.....................................................................................................................................................51

Installing the CPU...................................................................................................................................................... 53

System board................................................................................................................................................................... 56

Removing system board............................................................................................................................................56

Installing the system board....................................................................................................................................... 59

System board components.......................................................................................................................................59

3 Technology and components........................................................................................................................62

Memory conguration..................................................................................................................................................... 62

Technologies list............................................................................................................................................................... 63

4Contents

Teradici PCoIP.................................................................................................................................................................. 64

4 System specications..................................................................................................................................65

System specications......................................................................................................................................................65

Memory specications ...................................................................................................................................................65

Video specications.........................................................................................................................................................66

Audio specications.........................................................................................................................................................66

Network specications....................................................................................................................................................66

Card Slots..........................................................................................................................................................................67

Storage specications..................................................................................................................................................... 67

External connectors.........................................................................................................................................................67

Power specications........................................................................................................................................................67

Physical specications.....................................................................................................................................................68

Environmental specications.......................................................................................................................................... 68

5 System Setup.............................................................................................................................................. 69

General options................................................................................................................................................................ 69

System conguration.......................................................................................................................................................70

Video..................................................................................................................................................................................72

Security............................................................................................................................................................................. 73

Secure boot.......................................................................................................................................................................74

Performance..................................................................................................................................................................... 74

Power management.........................................................................................................................................................75

POST behavior................................................................................................................................................................. 76

Virtualization support.......................................................................................................................................................76

Maintenance..................................................................................................................................................................... 77

System logs.......................................................................................................................................................................77

Engineering congurations..............................................................................................................................................77

Updating the BIOS in Windows .....................................................................................................................................77

Updating BIOS on systems with bitlocker enabled................................................................................................78

Updating your system BIOS using a USB ash drive.............................................................................................78

Updating the Dell BIOS in Linux and Ubuntu environments................................................................................. 79

Flashing the BIOS from the F12 One-Time boot menu......................................................................................... 79

System and setup password...........................................................................................................................................83

Assigning a system password and setup password............................................................................................... 83

Deleting or changing an existing system and or setup password........................................................................ 84

6 Software......................................................................................................................................................85

Supported operating system.......................................................................................................................................... 85

Downloading drivers........................................................................................................................................................ 85

Chipset driver...................................................................................................................................................................86

Graphics controller driver................................................................................................................................................86

USB drivers.......................................................................................................................................................................86

Network drivers................................................................................................................................................................87

Audio drivers..................................................................................................................................................................... 87

Ports.................................................................................................................................................................................. 87

Storage controller drivers................................................................................................................................................87

Contents 5

Other drivers.....................................................................................................................................................................87

Security device drivers.............................................................................................................................................. 87

Software device drivers............................................................................................................................................ 88

Human Interface Devices..........................................................................................................................................88

Portable Devices........................................................................................................................................................ 88

7 Troubleshooting........................................................................................................................................... 89

Dell Enhanced Pre-Boot System Assessment — ePSA diagnostic 3.0.................................................................... 89

Running the ePSA diagnostics.................................................................................................................................89

Testing memory using ePSA.....................................................................................................................................89

Preboot blinking power button codes..................................................................................................................... 90

8 Contacting Dell............................................................................................................................................ 95

6 Contents

Working on your computer

Topics:

• Safety instructions

• Turning o your computer — Windows 10

• Before working inside your computer

• After working inside your computer

Safety instructions

Use the following safety guidelines to protect your computer from potential damage and to ensure your personal safety. Unless otherwise

noted, each procedure included in this document assumes that the following conditions exist:

• You have read the safety information that shipped with your computer.

• A component can be replaced or, if purchased separately, installed by performing the removal procedure in reverse order.

WARNING: Disconnect all power sources before opening the computer cover or panels. After you nish working inside the

computer, replace all covers, panels, and screws before connecting to the power source.

WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional

safety best practices information, see the Regulatory Compliance Homepage at www.Dell.com/regulatory_compliance

CAUTION: Many repairs may only be done by a certied service technician. You should only perform troubleshooting and simple

repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage

due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came

with the product.

CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an

unpainted metal surface at the same time as touching a connector on the back of the computer.

CAUTION: Handle components and cards with care. Do not touch the components or contacts on a card. Hold a card by its

edges or by its metal mounting bracket. Hold a component such as a processor by its edges, not by its pins.

CAUTION: When you disconnect a cable, pull on its connector or on its pull-tab, not on the cable itself. Some cables have

connectors with locking tabs; if you are disconnecting this type of cable, press in on the locking tabs before you disconnect the

cable. As you pull connectors apart, keep them evenly aligned to avoid bending any connector pins. Also, before you connect a

cable, ensure that both connectors are correctly oriented and aligned.

NOTE: The color of your computer and certain components may appear dierently than shown in this document.

CAUTION: System will shut down if side covers are removed while the system is running. The system will not power on if the side

cover is removed.

Turning o your computer — Windows 10

CAUTION: To avoid losing data, save and close all open les and exit all open programs before you turn o your computer or

remove the side cover.

1 Click or tap .

2 Click or tap and then click or tap Shut down.

Working on your computer 7

NOTE: Ensure that the computer and all attached devices are turned o. If your computer and attached devices did not

automatically turn o when you shut down your operating system, press and hold the power button for about 6 seconds

to turn them o.

Before working inside your computer

To avoid damaging your computer, perform the following steps before you begin working inside the computer.

1 Ensure that you follow the Safety instructions.

2 Ensure that your work surface is at and clean to prevent the computer cover from being scratched.

3 Ensure you follow the Turning o your computer.

4 Disconnect all network cables from the computer.

CAUTION: To disconnect a network cable, rst unplug the cable from your computer and then unplug the cable from

the network device.

5 Disconnect your computer and all attached devices from their electrical outlets.

6 Press and hold the power button while the computer is unplugged to ground the system board.

NOTE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an

unpainted metal surface at the same time as touching a connector on the back of the computer.

After working inside your computer

After you complete any replacement procedure, ensure that you connect any external devices, cards, and cables before turning on your

computer.

1 Connect any telephone or network cables to your computer.

CAUTION: To connect a network cable, rst plug the cable into the network device and then plug it into the

computer.

2 Connect your computer and all attached devices to their electrical outlets.

3 Turn on your computer.

4 If required, verify that the computer works correctly by running ePSA diagnostics.

8Working on your computer

Removing and installing components

Topics:

• Screw size list

• Recommended tools

• Power supply unit (PSU)

• Side cover

• Air shroud

• Front bezel

• PCIe holder

• Intrusion switch

• Front system fan assembly

• Internal chassis speaker

• Hard disk drive and the Optical disk drive bezel

• Hard disk drive assembly

• Front input and output bezel

• Front input and output panel

• Rear system fan

• Right side cover

• Slim Optical Disk Drive

• Power distribution and fan control board

• Front HDD Fan Bracket

• Fan bracket

• Graphical processing unit(GPU)

• Memory

• Coin cell battery

• Processor heat sink module

• System board

Screw size list

Table 1. Screw list

Component Screw Type Quantity

PSU extended card #6-32X1/4 inches 3

FIO board #6-32X1/4 inches 2

Slim ODD cable for blind mate M3X5.0mm 2

Slim ODD cable for blind mate with ODD

bracket

#6-32 UNC X5.45mm 1

FIO bracket #6-32X1/4 inches 1

Removing and installing components 9

Component Screw Type Quantity

Right Side Cover #6-32 UNC X7.0mm 2

Up-Bottom air shroud M3X5.0mm 3

Down-Bottom air shroud M3X5.0mm 2

Motherboard #6-32X1/4 inches 12

Front Fan Bracket-MB tray #6-32X1/4 inches 2

Front Fan Bracket-Front wall #6-32X1/4 inches 2

Intruder holder #6-32X1/4 inches 1

Rear Fan bracket #6-32X1/4 inches 2

Rear HDD cover #6-32 UNC X7.0mm 2

Flex0 HDD bay bracket #6-32 UNC X5.45mm 4

Flex0 6025fan bracket for cable attached #6-32 UNC X5.45mm 2

Flex0 6025fan bracket for hot plug #6-32 UNC X5.45mm 2

Flex0 and Flex1 HH ODD bracket #6-32 UNC X5.45mm 4

Flex1 HDD bay bracket #6-32 UNC X5.45mm 4

Flex1 6025fan bracket for cable attached #6-32 UNC X5.45mm 2

Flex1 6025fan bracket for hot plug #6-32 UNC X5.45mm 2

Flex2 HDD bay bracket #6-32 UNC X5.45mm 4

Flex2 6025fan bracket for cable attached #6-32 UNC X5.45mm 2

Flex3 HDD bracket #6-32 UNC X5.45mm 4

Flex3 6025fan bracket for cable attached #6-32 UNC X5.45mm 2

Flex4 HDD bracket #6-32 UNC X5.45mm 4

Flex4 6025fan bracket for cable attached #6-32 UNC X5.45mm 2

HH ODD holder M3X5.0mm 4

HSBP board #6-32 UNC X5.45mm 3

CPU0 cooler/CPU0 Liquid Cooler T-30 torx bolt 4

CPU1 cooler/CPU1 Liquid Cooler T-30 torx bolt 4

Liquid Cooler Bracket #6-32 UNC X5.45mm 12

Recommended tools

The procedures in this document require the following tools:

• Phillips #0 screwdriver

• Phillips #1 screwdriver

• Philips #2 screwdriver

• Plastic scribe

• T-30 torx screwdriver

10 Removing and installing components

NOTE: The #0 screw driver is for screws 0-1 and the #1 screw driver is for screws 2-4

Power supply unit (PSU)

Removing the PSU

1 Follow the procedure in Before working inside your computer.

2 Disconnect the power cable from the system.

3 Press the PSU release latch [1] and slide the power supply away from the system [2].

NOTE: If the PSU cannot be removed then remove the right side cover of the system and check if the PSU is secured

with a screw.

Installing the PSU

1 Slide in the power supply unit to the PSU slot on the system.

2 Connect the power cable to the system.

3 Follow the procedure in After working inside your computer

Side cover

Removing the side cover

1 Follow the procedure in Before working inside your computer.

Removing and installing components 11

CAUTION: The system will not power on while the side cover is o. Also, the system will shut down if the side cover is

removed while the system is on.

2 To remove the side cover:

3 Press the latch

4 Pull the latch [1] upward and rotate it to release the cover [2].

5 Lift the cover to remove it from the system.

12 Removing and installing components

Installing the side cover

1 First hold and align the bottom of the side cover to the chassis.

2 Ensure that the hook on the bottom of the side cover snaps into the notch on the system.

3 Press the system cover until it clicks into place.

CAUTION: The system will not power on without the side cover. Also, the system will shut down if the side cover is

removed while the system is on.

4 Follow the procedure in After working inside your computer .

Air shroud

Removing the air shroud

1 Follow the procedure in Before working inside your computer.

2 Remove the side cover.

3 To remove the air shroud:

a Disconnect the fan connector cable from the system board [1].

b Lift the shroud from the system [2].

Installing the air shroud

1 Place the shroud into its position and ensure that the tab ts into the system.

2 Press down the shroud until it locks with a click.

3 Reconnect the fan connector cable to the system board.

Removing and installing components 13

4 Install the side cover.

5 Follow the procedure in After working inside your computer.

Removing the air shroud fan

1 Follow the procedure in Before working inside your computer.

2 Remove the:

aside cover

bremoving air shroud (Top)

3 To remove the fan, release the fan connector cable from the latches [1] and [2].

4 Remove the screws that secures the fan to the air shroud [1], and lift the fan away from the air shroud [2].

NOTE: The shroud will need to be exed open slightly in order to be removed.

14 Removing and installing components

Installing the air shroud fan

1 Place the fan into its position inside the air shroud .

2 Replace the screws that secure the fan to the air shroud.

3 Route back the fan connector cable through the latches on the air shroud.

4 Install the:

aair shroud (top)

bside cover

5 Follow the procedure in After working inside your computer.

Front bezel

Removing the front bezel

1 Follow the procedure in Before working inside your computer.

2 Remove the side cover.

3 To remove the front bezel:

a Pry the retention tabs to release the front bezel from the system.

Removing and installing components 15

b Rotate the bezel forward and lift the front bezel away from the system.

16 Removing and installing components

Installing the front bezel

1 Hold the bezel and ensure that the hooks on the bezel snap into the notches on the system.

2 Rotate the bezel forward and press the front bezel until the tabs click into place.

3 Follow the procedure in After working inside your computer.

PCIe holder

Removing PCIe card holder

1 Follow the procedure in Before working inside your computer.

2 Remove the following:

aside cover

bair shroud

3 To remove the PCIe card holder:

NOTE: If full length cards are installed, you will need to remove these cards before removing the holder.

NOTE: If MegaRAID 9460 is installed, disconnect the Super CAP from the card before removing the PCIe card holder

from the system.

a Disconnect the power cables on either side of the card holder by pressing the tab and pulling it out of the cable slot in the PCIe

holder [1] and [2].

b Release the dual cables passing through the clip on the card holder [3].

4 Release the latches connecting the front system fan assembly, and lift the PCIe card holder away from the chassis.

Removing and installing components 17

Installing the PCIe card holder

1 Align the PCIe card holder to the slot in front of the system fan assembly, and press down until it clicks in place.

2 Route the dual cables back through the clip on the PCIe card holder.

3 Connect the power cables on either side to the cable slots in the PCIe card holder.

4 Reinstall the full length cards if they were removed.

5 If the MegaRAID 9460 was removed, please connect the Super CAP back to the card.

6 Install the:

aair shroud

bside cover

7 Follow the procedure in After working inside your computer.

Intrusion switch

Removing the intrusion switch

1 Follow procedure in Before working inside your computer.

2 Remove the right side cover.

3 To remove the intrusion switch that is located at the bottom of the system board:

NOTE: The system will not power on when the intrusion switch is uninstalled.

a Press the knob of the intrusion switch toward the bottom of the chassis [1, 2].

b Pull the intrusion switch down to remove it from the slot [3].

18 Removing and installing components

4 Install the right side cover

5 Flip the system back with the system cover facing up where the release latch is available.

6 Remove the following components :

aside cover

bair shroud

cPCIe card holder

7 To remove the intrusion switch module:

a Pull the bottom intrusion switch cable up toward the chassis [1].

b Press the tab to disconnect the intrusion switch cable from the system board [2].

c Unroute the intrusion switch cables from the clip on the chassis [3].

d Remove the screw on the intrusion module [4].

e Lift the intrusion module from the front system fan assembly [5].

Removing and installing components 19

Installing the intrusion switch

1 Place the intrusion switch module into the slot in the front system fan assembly.

2 To secure the intrusion switch module to the front system fan chassis, replace the single screw on the module.

3 Route the intrusion switch cables through the clip on the chassis.

4 Connect the intrusion switch cable to the system board.

5 Push the bottom intrusion switch cable down toward the bottom chassis.

6 Replace the following components:

aPCIe graphics card holder

bair shroud

cside cover

7 Remove the right side cover.

8 Pull the intrusion switch cable up from the top chassis.

9 Insert and slide the intrusion switch into the slot in the chassis to secure it.

10 Follow the procedure in After working inside your computer.

20 Removing and installing components

Front system fan assembly

Removing the front system fan assembly

1 Follow the procedure in Before working inside your computer.

2 Remove the following:

aside cover

bfront bezel

cair shroud

dPCIe card holder

3 To remove the system fan assembly:

a Remove the single screw on the intrusion switch module [1], and lift it away from the system fan chassis [2].

b Disconnect the internal chassis speaker cable from the connector, unroute it from the clip on the system fan chassis [3], and lift

it away from chassis [4].

4 Disconnect the four system fan cables from the connectors on the system board.

Removing and installing components 21

CAUTION: Do not pull the connector by the cable wires. Instead, disconnect the cable by pulling on the connector end.

Pulling the cable wires may loosen them from the connector.

5 Remove the two screws securing the fan chassis to the system [1], and the two screws securing the fan chassis in front of the system

[2].

22 Removing and installing components

6 Rotate and lift the fan assembly away from the system.

Removing and installing components 23

Installing the front system fan assembly

1 Hold the system fan by the sides with the cable end facing the bottom of the chassis.

2 Replace the two screws securing the system fan assembly in front of the system.

3 Replace the two screws securing the system fan assembly in the system.

4 Connect the four system fan cables to the system board.

5 Route back the internal chassis speaker cable through the clip on the system fan assembly, and connect the internal chassis speaker

to the connector.

6 Replace the intrusion switch module to the slot on the fan assembly and insert the screw to secure it with the system fan assembly.

7 Install the following components:

aPCIe graphics card holder

bair shroud

cfront bezel

dside cover

8 Follow the procedure in After working inside your computer.

Internal chassis speaker

24 Removing and installing components

Removing the internal chassis speaker

1 Follow the procedure in Before working inside your computer.

2 Remove the following:

aside cover

bfront bezel

cair shroud

3 To remove the internal chassis speaker:

a Disconnect one end of the internal chassis speaker cable from the connector on the system fan assembly [1].

b Unroute the internal chassis speaker cable from the clip on the system fan assembly.

4 Press and hold the tabs [2] on either side of the internal chassis speaker, to slide and remove it out of the system [3].

Removing and installing components 25

Installing the internal chassis speaker

1 Press and hold the tabs on either side of the internal chassis speaker, and slide the speaker module into the slot to secure it to the

system.

2 Route the internal chassis speaker cable through the clip on the system fan assembly.

3 Connect the one end of the internal chassis speaker cable to the connector on the system fan assembly.

4 Install the following components:

aair shroud

bfront bezel

cside cover

5 Follow the procedure in After working inside your computer

Hard disk drive and the Optical disk drive bezel

Removing the HDD and the ODD bezel

1 Follow the procedure in Before working inside your computer.

2 Remove the following components:

aside cover

bfront bezel

3 To remove the HDD bezel:

a Press the blue unlock button [1], which is located near the front system fan assembly.

b Slide the latch [2] on the front I/O bezel, to release the HDD bezel from the chassis [3].

c Rotate and lift the HDD bezel out from the chassis [3].

4 Optional: Remove the ODD bezel next to the HDD bezel from the chassis by prying the edges of the bezel and lifting it away.

26 Removing and installing components

Installing the HDD and the ODD bezel

1 If the ODD bezel is removed, install it by aligning the notch of the bezel into the slot on the chassis.

2 Align the HDD bezel onto its slots on the chassis and press the HDD bezel towards the chassis.

3 Press the blue lock button located near the front system fan assembly, to secure the HDD bezel to the chassis.

4 Install the following components:

afront bezel

bside cover

5 Follow the procedure in After working inside your computer

Hard disk drive assembly

Removing the HDD bracket

1 Follow the procedure in Before working inside your computer.

2 Remove the:

aside cover

NOTE: Do not remove the side cover, if the front I/O bezel is unlocked.

bHDD and ODD bezel

NOTE: Remove only the HDD bezel.

3 To remove the HDD bracket:

a Press the release button [1] to unlock the latch [2].

b Pull the latch to slide the bracket out of the HDD slot.

Removing and installing components 27

Installing the HDD bracket

1 Slide the bracket into the drive bay until it clicks into place.

CAUTION: Ensure that the latch is open before installing the bracket.

2 Lock the latch.

3 Install the following components:

aHDD and ODD bezel

bside cover

4 Follow the procedure in After working inside your computer.

Removing the HDD

1 Follow the procedure in Before working inside your computer.

2 Remove the following:

aside cover

bHDD and ODD bezel

cHDD bracket

3 To remove the HDD:

a Expand one side of the bracket.

28 Removing and installing components

b Lift the hard drive out of the bracket.

Installing the HDD

1 Insert the HDD into the 3.5" bracket with the connector end of the hard drive towards the back of the HDD bracket.

2 Slide the HDD bracket back into the hard drive bay.

Removing and installing components 29

3 Install the following:

aHDD bracket

bHDD and ODD bezel

cside cover

4 Follow the procedure in After working inside your computer

Front input and output bezel

Removing the front input and output bezel

1 Follow the procedure in Before working inside the computer.

2 Remove the:

aside cover

bfront bezel

cHDD and ODD bezel

3 To remove the front Input/Output (I/O) bezel, pry the edges of the panel [1].

4 Slightly slide the panel, and lift it away from the chassis.

30 Removing and installing components

Installing the front input and output bezel

1 Align and press the bezel toward the front chassis on the system.

2 Install the:

aHDD and ODD bezel

bfront bezel

cside cover

3 Follow the procedure in After working inside your computer

Front input and output panel

Removing the front input and output panel

1 Follow the procedure in Before working inside your computer.

2 Remove the following:

aside cover

bair shroud

cfront bezel

dPCIe holder

Removing and installing components 31

efront system fan

fHDD and ODD bezel

ginput and output bezel

3 To remove the front Input/Output (I/O) panel:

a Disconnect the following cables from the connectors on the I/O panel.

• Front panel cable [1]

• Front USB 3.1 cable [2]

• Front USB 3.2 cable [3]

• Front panel audio cable [4]

b Remove the single screw that secures the I/O panel to the chassis.

32 Removing and installing components

4 Slide the I/O panel toward the left of the system to release it, and then remove the I/O panel out of the system.

Removing and installing components 33

Installing the front input and output panel

1 Insert the I/O panel into the slot on the front of the chassis.

2 Slide the I/O panel toward the right of the system to secure it to the chassis.

3 Replace the screw to secure the I/O panel to the chassis.

4 Connect the following cables to the connectors on the I/O panel:

• Front panel cable

• Front USB 3.1 cable

• Front panel audio cable

NOTE: The color of the cable matches the color of the connector.

5 Install the following:

ainput and output bezel

bHDD and ODD bezel

cfront system fan

34 Removing and installing components

dPCIe holder

efront bezel

fair shroud

gside cover

6 Follow the procedure in After working inside your computer

Removing the input and output panel bracket

1 Follow the procedure in Before working inside your computer.

2 Remove the following:

aside cover

bair shroud

cfront bezel

dPCIe holder

efront system fan

fHDD and ODD bezel

ginput and output bezel

hinput and output panel

3 To remove the Input/Output (I/O) panel bracket:

a Remove the two screws that secure the I/O panel to the bracket.

b Release and remove the I/O panel out of the bracket.

Removing and installing components 35

Installing the input and output panel bracket

1 Insert the Input/Output (I/O) module into the metal bracket.

2 Replace the two screws to secure the I/O panel to the I/O bracket.

3 Install the:

ainput and output panel

binput and output bezel

cHDD and ODD bezel

dfront system fan

ePCIe holder

ffront bezel

gair shroud

hside cover

4 Follow the procedure in After working inside your computer

Rear system fan

Removing the rear system fan

1 Follow the procedure in Before working inside your computer.

2 Remove the following:

aside cover

bair shroud

3 To remove the rear system fan assembly:

a Remove the two screws [1], and press the tab [2] to rotate the rear system fan into the chassis and remove it from holder.

36 Removing and installing components

b Disconnect the system fan cables from the system board [1, 2].

CAUTION: Do not pull the connector by the cable wires. Instead, disconnect the cable by pulling on the

connector end. Pulling on the cable wires may loosen them from the connector.

4 Lift the system fan assembly from the system.

Removing and installing components 37

Installing the rear system fan

1 Hold the rear system fan by the sides with the cable end facing the bottom of the chassis.

2 Connect the two system fan cables to the system board.

3 Replace the two screws to secure the fan with the chassis.

4 Install the:

aair shroud

bside cover

5 Follow the procedure in After working inside your computer.

Right side cover

Removing the right side cover

1 Follow the procedure in Before working inside your computer.

2 Place the system chassis on the side with the right side cover facing upward.

3 Remove the two screws [1], that secure the right side cover to the chassis.

4 Slide the side cover back with the handle, and then lift it away from the system [2].

Installing the right side cover

1 Slide the cover forward and ensure that the hooks on the cover snap into the notches on the system.

2 Replace the two screws that secure the right side of the cover to the chassis.

3 Follow the procedure in After working inside your computer.

38 Removing and installing components

Slim Optical Disk Drive

Removing the slim ODD and ODD latch

1 Follow the procedure in Before working inside the computer.

2 Remove the right side cover

3 To remove the ODD:

a Disconnect the data cable and power cable [1] from the optical drive connector.

b Slide the blue latch towards the left of the chassis, and push the drive forward [2].

4 Remove the ODD out of the drive bay.

Removing and installing components 39

5 To remove the ODD bracket from the ODD drive:

a Push the optical drive latch inwards so that the latch disconnects from the optical drive.

b Remove the latch from the optical drive.

40 Removing and installing components

Installing the slim ODD and ODD latch

1 Place the ODD latch into its position on the ODD drive and lock it.

2 Slide the optical drive into the drive bay from the front of the system until it ts in to place.

3 Connect the data cable and power cable to the connectors on the optical drive.

4 Install the right side cover

5 Follow the procedure in After working inside your computer

Power distribution and fan control board

Removing the power distribution and fan control board

1 Follow the procedure in Before working inside the computer.

2 Remove the:

aPSU

bright side cover

3 To remove the power distribution and fan control board:

a Press the tab on both sides of the connector and disconnect the power cable on the control board [1].

b Disconnect the fan cables from the connectors on the control board [2].

c Disconnect the power, PDB, and power VGA cables from the connectors on the control board [3].

Removing and installing components 41

4 Remove the three screws that secure the control board to the chassis [1, 2]. Lift the control board away from the chassis.

Installing the power distribution and fan control board

1 Replace the control board into its slot on the chassis and secure it with the three screws to the chassis.

2 Connect the two power cables, fan cables, PDB, power VGA cables, to the connectors on the control board.

42 Removing and installing components

3 Install the:

aright side cover

bPSU

4 Follow the procedure in After working inside your computer

Front HDD Fan Bracket

Removing the front HDD fan bracket

1 Follow the procedure in Before working inside the computer.

2 Remove the right side cover

3 To remove the front HDD fan bracket:

a Remove the four screws securing both the fan brackets to the chassis [1].

b Press the tabs of the connector to disconnect the SATA 0 cable from the connector on the system board [2].

c Press the tabs to disconnect the power cable and remove it from the plug [3].

d Disconnect the fan cables from the connectors on the power distribution and fan control board [4].

CAUTION: Do not pull the connector by the cable wires. Instead, disconnect the cable by pulling on the

connector end. Pulling on the cable wires may loosen them from the connector.

4 Remove the HDD fan bracket from the chassis.

Removing and installing components 43

Installing the front HDD fan bracket

1 Connect the fan cables to the connectors on the power distribution and fan control board.

2 Connect the power cable to the connector on the power distribution and fan control board.

3 Connect the SATA 0 cable to the connector on the system board.

4 Replace the HDD Fan brackets into their slots on the chassis and secure them with screws to the chassis.

5 Install the right side cover

6 Follow the procedure in After working inside your computer

Fan bracket

Removing the fan from the fan bracket

1 Follow the procedure in Before working inside your computer.

2 Remove the:

aside cover

bsystem fan

3 To remove the fan from the fan bracket:

a Slide out the four rubber grommets for each fan from the fan chassis [1].

b Lift the fan and remove it from the fan assembly [2].

44 Removing and installing components

Installing the fan into the fan bracket

1 Place the fan into the fan bracket.

2 Tighten the grommets that secure the fan to the fan bracket.

3 Install the:

asystem fan

bside cover

4 Follow the procedure in After working inside your computer

Removing and installing components 45

Graphical processing unit(GPU)

Removing the GPU

1 Follow the procedure in Before working inside your computer.

2 Remove the side cover.

3 To remove the GPU:

a Disconnect the power cable [1] from the GPU card.

NOTE: Not all GPU cards will have power cable, may not apply to all systems.

b Press and rotate the blue clips backward [2], to unlock the ller bracket.

c Lift the GPU from the PCIe slot on the system board.

46 Removing and installing components

Installing the GPU

1 Align and place the GPU to the PCIe slot on the system board.

2 Press it down so that it is securely seated on the slot.

3 Connect the power cable to the GPU.

4 Lock both the blue clips forward on the ller bracket to secure the GPU to the system board.

5 Install the side cover.

6 Follow the procedure in After working inside your computer.

Memory

Removing the memory module

1 Follow the procedure in Before working inside your computer.

2 Remove the following:

aside cover

bair shroud

3 Press the memory module retention tabs on each side of the memory module.

Removing and installing components 47

4 Lift the memory module out of the memory slot on the system board.

WARNING: Rotating the memory module out of the slot will cause damage to the memory module. Ensure to pull it

straight out of the memory module slot.

Installing the memory module

1 Align the notch on the memory module with the tab on the memory module connector.

2 Insert the memory module into the memory module slot.

3 Press the memory module rmly until the retention tabs click into place.

NOTE: Do not pull the retention levers up. Always press down rmly on the module until the levers lock into place

unassisted.

4 Install the:

aair shroud

bside cover

5 Follow the procedure in After working inside your computer

Coin cell battery

Removing the coin cell battery

1 Follow the procedure in Before working inside your computer.

2 Remove the:

aside cover

bgraphical processing unit(GPU)

cair shroud

3 To remove the coin cell battery:

a Press the release latch [1] away from the battery to allow the battery to pop-up from the socket [2].

48 Removing and installing components

b Lift the coin-cell battery out of the system board.

Installing the coin cell battery

1 Place the coin-cell battery into its slot on the system board.

2 Press the coin-cell battery with positive (+) side facing up until the release latch springs back into place and secures it to the system

board.

3 To install:

aair shroud

bgraphical processing unit (GPU)

cside cover

4 Follow the procedure in After working inside your computer.

Removing and installing components 49

Processor heat sink module

Removing the processor heat sink module

1 Follow the procedure in Before working inside your computer.

NOTE: Ensure that you have Torx 30 screwdriver to remove the processor heat sink module (PHM).

2 Remove the:

aside cover

bair shroud

3 To remove the heat sink:

a Remove the four heat sink screws [1], in the diagonal order (4, 3, 2, 1).

b Lift the heat sink away from the CPU slot on the system board.

CAUTION: CPU will be removed with the heat sink.

50 Removing and installing components

Installing the processor heat sink module

1 Place the heat sink on the CPU slot.

2 Replace the four screws in the diagonal order (1,2,3,4), to secure the heat sink to the system board.

3 Install the:

aair shroud

bside cover

4 Follow the procedure in After working inside your computer.

Removing the CPU

1 Follow the procedure in Before working inside your computer.

2 Remove the:

aside cover

bair shroud

cprocessor heat sink module

3 To remove the central processing unit (CPU):

a Hold the processor heat sink module upside down.

b Pry the two processor carrier latchs [1] from the processor heat sink module.

c Press the other two carrier latchs [2] of the processor carrier and remove it from the slot in the heat sink.

Removing and installing components 51

d Use a torx screwdriver to pry the CPU o the processor heat sink module. Place the blade between the clip and the CPU.

NOTE: A atbed screwdriver or plastic scribe can also be used as well.

e Unlatch the CPU from the two keying latches on the processor carrier and gently lift the CPU.

NOTE: Avoid touching the CPU contacts with your

ngers.

52 Removing and installing components

Installing the CPU

1 Orient the processor carrier so that the smooth (logo-less) side of the carrier is facing up and the triangle mark on the carrier is on the

bottom left hand corner.

2 Align the processor with the carrier so that the triangle mark on the top side of the processor is aligned with the triangle mark on the

carrier.

Removing and installing components 53

3 Flip both the processor and the carrier over so that the pins on the processor and the logo side of the carrier are facing up.

4 Carefully insert the processor into the carrier so that it is secured by the hooks on the upper and lower side of the carrier.

NOTE: After inserting the processor into the carrier, check to see whether the small triangle on the processor aligns

with the triangle on the carrier. If they are not aligned repeat the preceding steps.

5 Align the processor and carrier assembly with the heat sink so that the triangle marks on the processor and carrier are aligned with the

triangle mark on the top side of the heat sink (captive screw #2).

54 Removing and installing components

6 Insert the processor and carrier assembly into the heat sink so that the hooks on the four corners of the carrier are locked into the

openings of heat sink.

NOTE: After inserting the processor and carrier assembly into the heat sink, double check to see whether the triangle

on the carrier is located on the bottom right corner of the heat sink (when the bottom side of the heat sink is facing

up).

7 Install the processor and heat sink onto the central processing unit (CPU) socket and then secure the four captive screws on the heat

sink to the system board in sequential order (1 > 2 > 3 > 4).

Removing and installing components 55

8 Install the:

aheat sink

bair shroud

cside cover

9 Follow the procedure in After working inside your computer

System board

Removing system board

1 Follow the procedure in Before working inside your computer.

2 Remove the:

aside cover

bfront bezel

cair shroud

dPCIe card holder

efront system fan

fmemory module

gprocessor heat sink module

hrear system fan

3 Disconnect the following cables from the system board:

• Front panel audio cable [1]

• Power cable

• Power control cable

• Internal chassis speaker cable

• Intrusion module cable

• System fan 3 cable [2]

56 Removing and installing components

4 Disconnect the front panel cables [1], power cable [2], front panel USB 2 cable and DD cable [3]

5 Remove the right side cover, to disconnect the SATA 0 cable from system board.

NOTE: Depending on the system conguration, additional cables might need to be

disconnected.

Removing and installing components 57

6 Remove the twelve screws securing the system board to the chassis.

7 Lift the system board away from the chassis.

58 Removing and installing components

Installing the system board

1 Align and place the system board onto the chassis and slide it back to its position.

2 Tighten the screws to secure the system board to the chassis.

3 Connect all the cables to the connectors on the system board.

4 Install the:

arear system fan

bprocessor heat sink module

cGPU

dmemory module

efront system fan

fPCIe card holder

gair shroud

hfront bezel

iside cover

5 Flip the system to connect the SATA 0 cable to the connector on the system board.

6 Install the right side cover

7 Follow the procedure in After working inside your computer

System board components

Figure 1. Components of the system board

Removing and installing components 59

1 PCIe 3*16 (4 slots) and 3*8 ( 1 slot) 2 Rear fan 0 connector

3 CPU1 memory slots 4 CPU1 socket

5 CPU1 memory slots 6 Rear fan 0 connector

7 CPU1 PCIe 3 x16 Slots (2) 8 Front panel audio

9 CPU1_DIS 10 Piezo speaker

11 CPU fan 0 connector 12 Power Control

13 Power 2 14 Intrusion switch connector

15 System Fan 3 16 Internal speaker connector

17 CPU1 memory slots 18 CPU 0 socket

19 System Fan 2 20 CPU1 memory slots

21 System Fan 1 22 LPC_ESPI_Debug

23 Power cable 1 24 CPU fan 1

25 Coin Cell battery 26 ODD cable

27 Front Panel USB 28 USB 2_Int

29 Flex USB 30 Power remote

60 Removing and installing components

31 VROC_key

Removing and installing components 61

Technology and components

This chapter details the technology and components available in the system.

Topics:

• Memory conguration

• Technologies list

• Teradici PCoIP

Memory conguration

This section provides information about the memory conguration for the Dell Precision Tower 7920 systems.

The following table illustrates the memory conguration and population rules for the Dell Precision Tower 7920:

62 Technology and components

Technologies list

This section provides information about the technologies that comes with the Dell Precision 7920 Tower.

The following table lists the basic of technologies that are available on the Dell Precision 7920 Tower systems for Dell internal users only.

Table 2. Technologies list

No. Category Technology Browser Path

1Chipset Intel C620 Series Chipset (C621)

2Processor • Intel Xeon Platinum 81xx

Processor

• Intel Xeon Gold 61xx

Processor

• Intel Xeon Gold 51xx

Processor

• Intel Xeon Silver 41xx

Processor

• Intel Xeon Bronze 31xx

Processor

3Memory DDR4

4Audio Integrated Realtek ALC3234 High

Denition Audio Codec (2

Channel)

5Network NIC Integrated RJ45

6Graphics Radeon Pro WX • 9100

• 7100

• 5100

• 4100

• 3100

• 2100

NVIDIA • Quadro GP100

• Quadro P6000

• Quadro P5000

• Quadro P4000

• Quadro P2000

• Quadro P1000

• Quadro P600

• Quadro P400

• NVS 310

• NVS 315

7Storage SATA

SAS

Dell UltraSpeed Quad (PCIE M.2

Interposer)

Dell UltraSpeed Duo (PCIE M.2

Interposer)

9Remote Solutions 1-1 Teradici PCoIP • CLIENT: Dell or other Branded Zero Client (TERA Gen 2)

(Dell-Wyse P25) DUAL Monitor Support

Technology and components 63

No. Category Technology Browser Path

• HOST: PCIe x1 PCoIP Dual Host Card (TERA Gen 2)

• CLIENT: Dell or other Branded Zero Client (TERA Gen 2)

(Dell-Wyse P45 ) QUAD Monitor Support

• HOST: PCIe x1 PCoIP Quad Host Card (TERA Gen 2)

• Support Dual Terra Card congurations

NOTE: For further information about the Teradici PCoIP

Card host driver installation, see Teradici PCoIP.

Teradici PCoIP

This section provides an overview of the host driver installation process.

Installing the Teradici PCoIP Card Host Dual/Quad

Install the PCoIP host driver software from dell.com/support.

NOTE: You cannot upgrade the PCoIP host driver software while a VMware View-brokered PCoIP session is active between a

host workstation or host PC and VMware View client. Doing this will result in losing access to your mouse and keyboard when the

driver software is removed.

To upgrade the PCoIP host driver software in this type of deployment, do one of the following:

• Connect to the host from a zero client.

• Upgrade the software while connecting to the host through another desktop-remoting protocol such as RDP or VNC.

Installing the PCoIP Host Driver Software on a Host PC:

1 Download the PCoIP host driver software from the Teradici Support site (click Current PCoIP Product and Releases).

2 Log in to the administrative web interface for the host card.

3 From the Conguration > Host Driver Function menu, enable the Host Driver Function.

4 Restart the host PC.

5 Install the PCoIP host software package appropriate for the operating system installed on the host PC. You can start the install

process by double-clicking the installer:

a 64 bit: PCoipHostSoftware_x64-v4.3.0.msi (or later)

6 When the Welcome screen appears, click Next.

7 Accept the terms, and then click Next.

8 Ensure that the installation location is correct, and click Next.

9 Click Install.

NOTE:

For Windows 7, when the driver is installed, a Windows Security dialog may appear. Click Install to continue with the

installation. To keep this dialog box from appearing in the future, select Always trust software from Teradici Corporation.

10 If prompted, restart the operating system; otherwise, skip this step. When restarted, the host driver software installation process

continues when the OS boots up. Click Install to continue.

11 Click Finish to complete the installation.

64 Technology and components

System specications

Topics:

• System specications

• Memory specications

• Video specications

• Audio specications

• Network specications

• Card Slots

• Storage specications

• External connectors

• Power specications

• Physical specications

• Environmental specications

System specications

Feature Specication

Processor type Intel Xeon Processor Scalable Family

• Intel Xeon Platinum 81xx Processor

• Intel Xeon Gold 61xx Processor

• Intel Xeon Gold 51xx Processor

• Intel Xeon Silver 41xx Processor

• Intel Xeon Bronze 31xx Processor

Total cache Up to 38.5 MB

Memory specications

Features Specications

Type DDR4 RDIMM ECC

Maximum Frequency 2666 MHz

Speed 2666 MHz

Connectors 24 DIMM Slots (12 per CPU)

DIMM capacities 4 GB, 8 GB, 16 GB, 32 GB, 64 GB, 128 GB

NOTE: Six channel memory up to 1.5 TB 2666 MHz DDR4 ECC memory per CPU with select CPU

SKUs..

Minimum memory 16 GB (2x8 GB) i.e. 2 DIMMs per CPU

System specications 65

Features Specications

Maximum memory 3 TB

NOTE: Up to 3 TB with select CPU SKUs

Video specications

Features Specications

Graphic cards • Radeon Pro WX 9100

• NVIDIA Quadro GP100

• NVIDIA Quadro P6000

• NVIDIA Quadro P5000

• Radeon Pro WX 7100

• Radeon Pro WX 5100

• Radeon Pro WX 4100

• NVIDIA Quadro P4000

• NVIDIA Quadro P2000

• Radeon Pro WX 3100

• Radeon Pro WX 2100

• NVIDIA Quadro P1000

• NVIDIA Quadro P600

• NVIDIA Quadro P400

• NVIDIA NVS 310

• NVIDIA NVS 315

Audio specications

Features Specications

Type High Denition Audio Codec (2 Channel)

Controller Integrated Realtek ALC3234

Internal Speaker

Power Rating

Internal microphone

support

Network specications

Features Specications

Integrated Intel i219 and i210 Gigabit Ethernet controllers with Intel Remote Wake UP, PXE and Jumbo frames support.

Network adaptor 2

(Optional) • Intel i210 10/100/1000 single port PCIe (Gen 3 x1) gigabit network card.

• Intel X550-T2 10GbE dual port PCIe (Gen 3 x4) network card.

• Aquantia AQN-108 2.5Gbit/5Gbe single port PCIe (Gen3 x4) network card.

66 System specications

Card Slots

Features Specications

Type PCIe Gen 3

Slots • two PCIE Gen 3 x16

• two PCIE Gen 3 x16 (enabled with 2nd CPU)

• one PCIE Gen 3 x8 (open ended connector)

• one PCIE Gen 3 x16 (wired as x4)

• one PCIE Gen 3 x16 (wired as x1)

Storage specications

Features Specications

Externally Accessible DVD-ROM; DVD+/-RW Optional 5.25” bay devices: BD, DVD+/-RW

Internally Accessible • M.2 NVMe PCIe SSDs—Up to 8* x 1TB drives on 2 Dell Precision Ultra-Speed Drive Quad x16 cards. Requires

dual CPU cong

• Front FlexBay M.2 NVMe PCIe SSDs—Up to 4* x 1TB drives, 2 drives per CPU. Requires dual CPU cong

• Up to 8 x 3.5" (or 2.5") SATA Drives

• Up to 10 x 3.5" (or 2.5") SATA/SAS Drives with optional controller

External connectors

Features Specications

Audio • Rear—1 x Audio Line out

• Rear—1 x Audio Line in/Microphone

• Front—1 x Universal Audio Jack

Network Rear—2 x RJ45 Network ports

Serial port Rear—1 x Serial port

USB • Front—2 x USB 3.1 Gen 1 and 2 x USB 3.1 Gen 1 Type-C (1 with PowerShare)

• Rear—6 x USB 3.1 Gen 1

PS2 • Rear—1 x Keyboard

• Rear—1 x Mouse

Power specications

Features Specications

Voltage Input voltage 100VAC - 240VAC

System specications 67

Features Specications

Wattage • 1400W at 181VAC - 240VAC

• 1100W at 100VAC - 180VAC

Physical specications

Features Specications

Height 433mm

Width 218mm

Depth 566mm

Weight (Minimum) With front bezel

• Min conguration 20.4 kg

• Typical conguration 24.3 kg

• Max conguration 33.1 kg

Environmental specications

Temperature Specications

Operating 5 °C to 35 °C (41 F to 95 °F)

NOTE: * Starting at 5000 ft, the maximum operating ambient temperature is derated by 1 C (1.8 F) per

1000 ft up to 10,000 ft.

Storage -40 °C to 65 °C(-40 F to 149 F)

Relative humidity

(maximum)

Specications

Operating 8% to 85% (non-condensing)

Storage 5% to 95% (non-condensing)

Maximum

vibration

Specications

Operating 0.52 Grms, 5 to 350 Hz

Storage 2.0 Grms, 5 to 500 Hz

Maximum Shock Specications

Operating 40 G half-sine 2.5 ms pulse

Storage 105 G half-sine 2.5 ms pulse

68 System specications

System Setup

Topics:

• General options

• System conguration

• Video

• Security

• Secure boot

• Performance

• Power management

• POST behavior

• Virtualization support

• Maintenance

• System logs

• Engineering congurations

• Updating the BIOS in Windows

• System and setup password

General options

Table 3. General options

Option Description

System Information This section lists the primary hardware features of your computer.

• System Information

• Memory Conguration

• Processor Information

• Device Information

• PCI Information

Boot Sequence Allows you to change the order in which the computer attempts to

nd an operating system.

• Diskette Drive

• USB Storage Device

• CD/DVD/CD-RW Drive

• Onboard NIC

• Internal HDD

Boot List Option Allows you to change the boot list option.

• Legacy

• UEFI

System Setup 69

Option Description

Advanced Boot Options Allows you to Enable Legacy Option ROMs

•Enable Legacy Option ROMs—Default

•Enable Attempt Legacy Boot

Date/Time Allows you to set the date and time. The changes to the system date

and time take eect immediately.

UEFI Boot Path Security Allows you to control whether the system prompts the user to enter

the Admin password when booting to a UEFI boot path.

Click one of the following options:

•Always, Except Internal HDD—Default

•Always

•Never

System conguration

Table 4. System Conguration

Option Description

Integrated NIC Allows you to congure the integrated network controller. The

options are:

• Enable UEFI Network Stack

• Disabled

NOTE: You can use the Disabled option, only if

Active Management Technology (AMT) option is

disabled.

• Enabled

•Enabled w/PXE (Default)

Integrated NIC 2 Allows you to congure the integrated network controller. The

options are:

•Enabled (Default)

• Enabled w/PXE

NOTE: This feature is supported only on Tower 7920.

UEFI Network Stack Allows pre-OS and early OS networking features to use any enabled

NICs.

•Enabled UEFI Network Stack

This option is set by default.

Serial Port Identies and denes the serial port settings. You can set the serial

port to:

• Disabled

•COM1 (Default)

• COM2

• COM3

• COM4

70 System Setup

Option Description

NOTE: The operating system may allocate resources even

if the setting is disabled.

SATA Operation

7910 Tower Allows you to congure the internal SATA hard-drive controller. The

options are:

• Disabled

• AHCI

•RAID-On (Default)

NOTE: SATA is congured to support RAID

mode.

Drives

7910 Tower • SATA–0

• SATA–1

• SATA–2

• SATA–3

• SATA–4

• SATA–5

• SATA–6

• SATA–7

• SATA–8

Default Setting: All drives are enabled.

NOTE: If the hard drives are connected to a RAID

controller card, the hard drives will display {none} in all the

elds. The hard drives can be seen in the RAID controller

card BIOS.

PCIe Drives Allows the enabling of Front PCIe attached Ports.

• MiniSAS PCIe SSD-0

• MiniSAS PCIE SSD-1

• MiniSAS PCIe SSD-2

• MiniSAS PCIE SSD-3

Default Setting: All drives are enabled.

SMART Reporting This eld controls if the hard drive errors for the integrated drives

are reported during system startup. This technology is part of the

SMART (Self Monitoring Analysis and Reporting Technology)

specication.

•Enable SMART Reporting - This option is disabled by default.

USB Conguration Allows you to enable or disable the internal USB conguration. The

options are:

• Enable Boot Support

• Enable Front USB Ports

• Enable internal USB ports

• Enable rear USB Ports

System Setup 71

Option Description

HDD Fans Allows you to control the HDD fans.

Default Setting: depends on the system conguration

Audio Allows you enable or disable the audio feature.

•Enable Audio (Default)

Memory Map IO above 4GB Allows you enable or disable Memory Map IO above 4GB.

•Memory Map IO above 4GB - This option is disabled by

default.

Thunderbolt Allows you to enable or disable Thunderbolt device support

capability.

•Enabled

•Disabled (Default)

Miscellaneous devices Allows you to enable or disable various on board devices.

•Enable Secure Digital (SD) Card (Default On)

•Secure Digital (SD) Card Read Only Mode

•Secure Digital (SD) Card Boot

Intel VMD Technology Allows you to enable or disable VMD on the front PCIe bays.

•PCIe0

•PCIe1

•PCIe0_CPU1

•PCIe1_CPU1

Default Setting: All options are enabled.

Allows you to disable VMD for the PCIe Slots.

•Auto (Default On)

•Disabled

Video

Table 5. Video

Option Description

Primary Video Slot Allows you to congure primary boot video device. The options are:

•Auto (Default)

• SLOT 1

• SLOT 2: VGA Compatible

• SLOT 3

• SLOT 4

• SLOT 5

• SLOT 6

• SLOT1_CPU2: VGA Compatible

• SLOT2_CPU2

72 System Setup

Security

Table 6. Security

Option Description

Strong Password Allows you to enforce the option to always set strong passwords.

Default Setting: Enable Strong Password is not selected.

Password Conguration You can dene the length of your password. Min = 4 , Max = 32

Password Bypass Allows you to enable or disable the permission to bypass the System password, when it is set. The options

are:

•Disabled (Default)

• Reboot bypass

Password Change Allows you to enable the disable permission to the System passwords when the administrator password is

set.

Default Setting: Allow Non-Admin Password Changes is selected

UEFI Capsule Firmware

Updates

Allows you to update the system BIOS via UEFI capsule update packages.

•Enable UEFI Capsule Firmware Updates

This option is set by default.

TPM Security Allows you to enable the Trusted Platform Module (TPM) during POST.

Default Setting: The option is disabled.

Computrace (R) Allows you to activate or disable the optional Computrace software. The options are:

•Deactivate (Default)

• Disable

• Activate

Chassis Intrusion Allows you to control the chassis intrusion feature.

Click one of the following options:

•Disabled—Default

•Enabled

•On-Silent

CPU XD Support Allows you to enable the Execute Disable mode of the processor.

•Enable CPU XD Support (Default)

OROM Keyboard Access Allows you to determine whether users are able to enter Option ROM Conguration screens via hotkeys

during boot. The options are:

•Enable (Default)

• One Time Enable

• Disable

Admin Setup Lockout Allows you to prevent users from entering Setup when an administrator password is set.

•Enable Admin Setup Lockout

System Setup 73

Option Description

Default Setting: The option is disabled.

Secure boot

Table 7. Secure Boot

Option Description

Secure Boot Enable Allows you to enable or disable the Secure Boot Feature. The

options are:

•Disabled (Default)

• Enabled

Expert Key Management Allows you to enable or disable Custom Mode Key Management.

•Disabled (Default)

Performance

Table 8. Performance

Option Description

Multi Core Support This eld species whether the processor will have one or all cores

enabled. The performance of some applications will improve with

the additional cores. This option is enabled by default. Allows you to

enable or disable multi-core support for the processor. The options

are:

•All (Default)

• 1

• 2

• 3

• 4

• 5

• 6

• 7

• 8

NOTE:

• The options displayed could be dierent depending on

the installed processor(s).

• The options depend on the number of cores supported

by the installed processor (All, 1, 2, N-1 for N-Core

Processors)

Intel SpeedStep Allows you to enable or disable the Intel SpeedStep feature.

Default Setting: Enable Intel SpeedStep

C States Allows you to enable or disable the additional processor sleep

states.

74 System Setup

Option Description

Default Setting: Enabled

Intel TurboBoost Allows you to enable or disable the Intel TurboBoost mode of the

processor.

Default Setting: Enable Intel TurboBoost

Hyper-Thread Control Allows you to enable or disable the HyperThreading in the

processor.

Default Setting: Enabled

Cache Prefetch Default Setting: Enable Hardware Prefetch and Adjacent Cache

Line Prefetch

Dell Reliable Memory Technology (RMT) Allows you to identify and isolate memory errors in system RAM..

Default Setting: Enable Dell Reliable Memory Technology (RMT)

System Isochronous Mode Allows you to enable or disable this mode to reduce latency of

memory transactions at the expense of bandwidth. :

Click one of the options:

•Disabled(Default)

•Enabled

RAS Support Allows you to report or log errors caused by memory failures, the

PCIe failures, CPU failures. The options are:

•Enable on Memory modules

•Enable on PCIe modules

•Enable on CPU modules

The options are not set by default.

Power management

Table 9. Power Management

Option Description

AC Recovery Species how the computer will respond when AC power is applied after a AC power loss. You can set the

AC Recovery to:

•Power O (Default)

• Power On

• Last Power State

Auto On Time Allows you to set the time at which the computer must turn on automatically. The options are:

•Disabled (Default)

• Every Day

• Weekdays

• Select Days

Deep Sleep Control Allows you to dene the controls when Deep Sleep is enabled.

•Disabled (Default)

System Setup 75

Option Description

• Enabled in S5 only

• Enabled in S4 and S5

USB Wake Support Allows you to enable USB devices to wake the system from standby.

•Enable USB Wake Support

Default Setting: The option is disabled.

Wake on LAN This option allows the computer to power up from the o state when triggered by a special LAN signal.

Wake-up from the Standby state is unaected by this setting and must be enabled in the operating

system. This feature only works when the computer is connected to AC power supply.

•Disabled - Does not allow the system to power on by special LAN signals when it receives a wake-up

signal from the LAN or wireless LAN.

•LAN Only - Allows the system to be powered on by special LAN signals.

•LAN with PXE Boot - Allows the system to power on and immediately boot to PXE when it receives a

wake-up packet sent to the system in either the S4 or S5 state.

This option is Disabled by default.

Block Sleep Allows you to block entering to sleep (S3 state) in OS Environment.

Default Setting: Disabled

POST behavior

Table 10. POST Behavior

Option Description

Numlock LED Species if the NumLock function can be enabled when the system boots. This option is enabled by

default.

Keyboard Errors Species whether keyboard related errors are reported when it boots. This option is enabled by default.

Fastboot Allows you to speed up the boot process by bypassing some compatibility steps. The options are:

• Minimal

•Thorough - This option is enabled by default.

• Auto

Virtualization support

Table 11. Virtualization Support

Option Description

Virtualization This option species whether a Virtual Machine Monitor (VMM) can utilize the additional hardware

capabilities provided by Intel Virtualization technology.

•Enable Intel Virtualization Technology - This option is enabled by default.

VT for Direct I/O Enables or disables the Virtual Machine Monitor (VMM) from utilizing the additional hardware capabilities

provided by Intel Virtualization technology for direct I/O.

76 System Setup

Option Description

•Enable VT for Direct I/O - This option is enabled by default.

Trusted Execution Allows you to specify whether a Measured Virtual Machine Monitor (MVMM) can utilize the additional

hardware capabilities provided by Intel Trusted Execution Program.

•Trusted Execution - This option is disabled by default.

Maintenance

Table 12. Maintenance

Option Description

Service Tag Displays the service tag of your computer.

Asset Tag Allows you to create a system asset tag if an asset tag is not already set. This option is not set by default.

SERR Messages Controls the SERR message mechanism. This option is not set by default. Some graphics cards require

that the SERR message mechanism be disabled.

System logs

Table 13. System Logs

Option Description

BIOS events Displays the system event log and allows you to clear the log.

• Clear Log

Engineering congurations

Table 14. Engineering congurations

Option Description

ASPM •Auto (Default)

• L1 Only

• Disabled

• L0s and L1

• L0s Only

Pcie LinkSpeed •Auto (Default)

• Gen1

• Gen2

• Gen3

Updating the BIOS in Windows

It is recommended to update your BIOS (System Setup), when you replace the system board or if an update is available. For laptops, ensure

that your computer battery is fully charged and connected to a power outlet

System Setup 77

NOTE: If BitLocker is enabled, it must be suspended prior to updating the system BIOS, and then re-enabled after the BIOS

update is completed.

1 Restart the computer.

2 Go to Dell.com/support.

• Enter the Service Tag or Express Service Code and click Submit.

• Click Detect Product and follow the instructions on screen.

3 If you are unable to detect or nd the Service Tag, click Choose from all products.

4 Choose the Products category from the list.

NOTE: Choose the appropriate category to reach the product page

5 Select your computer model and the Product Support page of your computer appears.

6 Click Get drivers and click Drivers and Downloads.

The Drivers and Downloads section opens.

7 Click Find it myself.

8 Click BIOS to view the BIOS versions.

9 Identify the latest BIOS le and click Download.

10 Select your preferred download method in the Please select your download method below window, click Download File.

The File Download window appears.

11 Click Save to save the le on your computer.

12 Click Run to install the updated BIOS settings on your computer.

Follow the instructions on the screen.

NOTE: It is recommended not to update the BIOS version for more than three revisions. For example: If you want to update the

BIOS from 1.0 to 7.0, then install version 4.0 rst and then install version 7.0.

Updating BIOS on systems with bitlocker enabled

CAUTION: If BitLocker is not suspended before updating the BIOS, the next time you reboot the system it will not recognize the

BitLocker key. You will then be prompted to enter the recovery key to progress and the system will ask for this on each reboot. If

the recovery key is not known this can result in data loss or an unnecessary operating system re-install. For more information on

this subject, see Knowledge Article: http://www.dell.com/support/article/us/en/19/SLN153694/updating-bios-on-systems-

with-bitlocker-enabled?lang=EN

Updating your system BIOS using a USB ash drive

If the system cannot load into Windows but there is still a need to update the BIOS, download the BIOS le using another system and save

it to a bootable USB Flash Drive.

NOTE: You will need to use a bootable USB Flash drive. Please refer to the following article for further details: http://

www.dell.com/support/article/us/en/19/SLN143196/how-to-create-a-bootable-usb-ash-drive-using-dell-diagnostic-

deployment-package--dddp-?lang=EN

1 Download the BIOS update .EXE le to another system.

2 Copy the le e.g. O9010A12.EXE onto the bootable USB Flash drive.

3 Insert the USB Flash drive into the system that requires the BIOS update.

4 Restart the system and press F12 when the Dell Splash logo appears to display the One Time Boot Menu.

5 Using arrow keys, select USB Storage Device and click Return.

6 The system will boot to a Diag C:\> prompt.

7 Run the le by typing the full lename e.g. O9010A12.exe and press Return.

8 The BIOS Update Utility will load, follow the instructions on screen.

78 System Setup

Figure 1. DOS BIOS Update Screen

Updating the Dell BIOS in Linux and Ubuntu environments

If you want to update the system BIOS in a Linux environment such as Ubuntu, see http://www.dell.com/support/article/us/en/19/

SLN171755/updating-the-dell-bios-in-linux-and-ubuntu-environments?lang=EN.

Flashing the BIOS from the F12 One-Time boot menu

Updating your system BIOS using a BIOS update .exe le copied to a FAT32 USB key and booting from the F12 one time boot menu.

BIOS Update

You can run the BIOS update le from Windows using a bootable USB key or you can also update the BIOS from the F12 One-Time boot

menu on the system.

Most Dell systems built after 2012 have this capability and you can conrm by booting your system to the F12 One-Time Boot Menu to see

if BIOS FLASH UPDATE is listed as a boot option for your system. If the option is listed, then the BIOS supports this BIOS update option.

NOTE: Only systems with BIOS Flash Update option in the F12 One-Time Boot Menu can use this function.

Updating from the One-Time Boot Menu

To update your BIOS from the F12 One-Time boot menu, you will need:

• USB key formatted to the FAT32 le system (key does not have to be bootable)

• BIOS executable le that you downloaded from the Dell Support website and copied to the root of the USB key

• AC power adapter connected to the system

• Functional system battery to ash the BIOS

Perform the following steps to execute the BIOS update ash process from the F12 menu:

CAUTION: Do not power o the system during the BIOS update process. Powering o the system could make the system fail to

boot.

1 From a power o state, insert the USB key where you copied the ash into a USB port of the system .

2 Power on the system and press the F12 key to access the One-Time Boot Menu, Highlight BIOS Flash Update using the arrow keys

then press Enter.

System Setup 79

3 The Bios ash menu will open then click the browse button.

4 The E5450A14.exe le is shown as an example in the following screenshot. The actual le name may vary.

80 System Setup

5 Once the le is selected, it will show in the le selection box and you can click the OK button to continue.

6 Click the Begin Flash Update button.

System Setup 81

7 A warning box is displayed asking you if you want to proceed. Click the Yes button to begin the ash.

8 At this point the BIOS ash will execute, the system will reboot and then the BIOS ash will start and a progress bar will show the

progress of the ash. Depending on the changes included in the update, the progress bar may go from zero to 100 multiple times and

the ash process could take as long as 10 minutes. Generally this process takes two to three minutes.

82 System Setup

9 Once complete, the system will reboot and the BIOS update process is completed.

System and setup password

You can create a system password and a setup password to secure your computer.

Password type Description

System password Password that you must enter to log on to your system.

Setup password Password that you must enter to access and make changes to the BIOS settings of your computer.

CAUTION: The password features provide a basic level of security for the data on your computer.

CAUTION: Anyone can access the data stored on your computer if it is not locked and left unattended.

NOTE: System and setup password feature is disabled.

Assigning a system password and setup password

You can assign a new System Password only when the status is in Not Set.

To enter the system setup, press F2 immediately after a power-on or re-boot.

1 In the System BIOS or System Setup screen, select Security and press Enter.

The Security screen is displayed.

2 Select System Password and create a password in the Enter the new password eld.

Use the following guidelines to assign the system password:

• A password can have up to 32 characters.

• The password can contain the numbers 0 through 9.

• Only lower case letters are valid, upper case letters are not allowed.

• Only the following special characters are allowed: space, (”), (+), (,), (-), (.), (/), (;), ([), (\), (]), (`).

3 Type the system password that you entered earlier in the Conrm new password eld and click OK.

4 Press Esc and a message prompts you to save the changes.

System Setup 83

5 Press Y to save the changes.

The computer reboots.

Deleting or changing an existing system and or setup password

Ensure that the Password Status is Unlocked (in the System Setup) before attempting to delete or change the existing System and/or

Setup password. You cannot delete or change an existing System or Setup password, if the Password Status is Locked.

To enter the System Setup, press F2 immediately after a power-on or reboot.

1 In the System BIOS or System Setup screen, select System Security and press Enter.

The System Security screen is displayed.

2 In the System Security screen, verify that Password Status is Unlocked.

3 Select System Password, alter or delete the existing system password and press Enter or Tab.

4 Select Setup Password, alter or delete the existing setup password and press Enter or Tab.

NOTE: If you change the System and/or Setup password, re-enter the new password when promoted. If you delete the

System and/or Setup password, conrm the deletion when promoted.

5 Press Esc and a message prompts you to save the changes.

6 Press Y to save the changes and exit from System Setup.

The computer reboots.

84 System Setup

Software

This chapter details the supported operating systems along with instructions on how to install the drivers.

Topics:

• Supported operating system

• Downloading drivers

• Chipset driver

• Graphics controller driver

• USB drivers

• Network drivers

• Audio drivers

• Ports

• Storage controller drivers

• Other drivers

Supported operating system

Table 15. Operating systems

Windows 10 • Factory installed Windows 10 Pro—64-bit

• Factory installed Win 10 Enterprise—64 bit

Windows 7 Windows 7 Pro—64-bit

Linux • RHEL 7.3

• Ubuntu 16.04

• NeoKylin v6.0

Downloading drivers

1 Turn on the computer.

2 Go to Dell.com/support.

3 Click Product Support, enter the Service Tag of your system, and then click Submit.

NOTE: If you do not have the Service Tag, use the auto detect feature or manually browse for your system model.

4 Click Drivers and Downloads.

5 Select the operating system installed on your system.

6 Scroll down the page and select the driver to install.

7 Click Download File to download the driver for your system.

8 After the download is complete, navigate to the folder where you saved the driver le.

9 Double-click the driver le icon and follow the instructions on the screen.

Software 85

Chipset driver

Verify if the Intel chipset and Intel Management Engine Interface drivers are already installed in the computer.

Graphics controller driver

Verify if the graphics controller driver is already installed in the computer.

USB drivers

Verify if the USB drivers are already installed in the computer.

86 Software

Network drivers

This system comes with both LAN and WiFi drivers and is able to detect the LAN and WiFi without going through the drivers installation.

Audio drivers

Verify if audio drivers are already installed in the computer.

Ports

Verify if the drivers for the ports are already installed in the computer.

Storage controller drivers

Verify if the storage controller drivers are installed in the computer.

Other drivers

This section lists driver details for all the other components in the Device Manager.

Security device drivers

Verify if the security device drivers are installed in the computer.

Software 87

Software device drivers

Verify if the software device drivers are installed in the computer.

Human Interface Devices

Verify if the Human Interface device drivers are installed in the computer.

Portable Devices

Verify if the portable device drivers are installed in the computer.

88 Software

Troubleshooting

The following section describes common troubleshooting steps that can be performed to resolve certain problems on your computer.

Dell Enhanced Pre-Boot System Assessment — ePSA

diagnostic 3.0

You can invoke the ePSA diagnostics by performing either of the following steps:

• Press the F12 key when the system boots and choosing Diagnostics option.

• Press Fn+PWR when the system boots.

For more details, see Dell EPSA Diagnostic 3.0.

Running the ePSA diagnostics

1 Power-on the computer.

2 As the computer boots, press the F12 key as the Dell logo appears.

3 On the boot menu screen, select the Diagnostics option.

4 Click the arrow key at the bottom left corner.

Diagnostics front page is displayed.

5 Press the arrow in the lower-right corner to go to the page listing.

The items detected are listed.

6 To run a diagnostic test on a specic device, press Esc and click Yes to stop the diagnostic test.

7 Select the device from the left pane and click Run Tests.

8 If there are any issues, error codes are displayed.

Note the error code and validation number and contact Dell.

Testing memory using ePSA

1 Turn on or restart your system.

2 Perform one of the following actions after the Dell logo is displayed:

• With keyboard — Press F12.

The PreBoot System Assessment (PSA) starts on your system.

NOTE: If you wait too long and the operating system logo appears, continue to wait until you see the desktop. Turn o

the laptop and try again.

Troubleshooting 89

Preboot blinking power button codes

Table 16. Power button LED state

Power Button LED State Description

O Power is O. LED is blank.

Blinking Amber Initial State of LED at power up. See the table below for Blinking

Amber pattern diagnostic suggestions and possible failures.

Blinking White System is in a low power state, either S1 or S3. This does not

indicate a fault condition.

Solid Amber The second state of the LED at power up, indicates that the

POWER_GOOD signal is active and it is probable that the power

supply is ne.

Solid White System is in S0 state. This is the normal power states of a

functioning machine. The BIOS will turn the LED to this states to

indicate it has started fetching op-codes.

Table 17. Diagnostic Indicator table

State State Name Power Light: Amber

Blinking

Amber Blinking

Pattern

Problem Description Suggested

Resolution

- - 2, 1 2 blinks followed by a

short pause, 1 blink,

long pause, then

repeats

Faulty System board To troubleshoot the

issue with system

board, contact Tech

support.

- - 2, 2 2 blinks followed by a

short pause, 2 blinks,

long pause, then

repeats

Bad system board,

Power Supply or

Power Supply

cabling

• If you can assist

to troubleshoot,

narrow down the

issue with PSU

BIST Test, reseat

cable.

• If nothing works,

contact Tech

Support

- - 2, 3 2 blinks followed by a

short pause, 3 blinks,

long pause, then

repeats

Bad system board,

Memory or

Processor

• If you can assist

to troubleshoot,

narrow down the

issue by

reseating

memory and

swapping a

known good

memory if

available.

• If nothing works,

contact Tech

Support

- - 2, 4 2 blinks followed by a

short pause, 4 blinks,

long pause, then

repeats

Bad coin cell battery • If you can assist

to troubleshoot,

narrow down the

issue by

90 Troubleshooting

State State Name Power Light: Amber

Blinking

Amber Blinking

Pattern

Problem Description Suggested

Resolution

swapping a

known good coin

cell battery if

available.

• If nothing works,

contact Tech

Support

S1 RCM 2, 5 2 blinks followed by a

short pause, 5 blinks,

long pause, then

repeats

BIOS Checksum

Failure • System is in

Recovery Mode.

• Flash latest BIOS

version. If

problem persists,

contact Tech

Support

S2 CPU 2, 6 2 blinks followed by a

short pause, 6 blinks,

long pause, then

repeats

Bad Processor • CPU

conguration

activity is in

progress or a

CPU failure was

detected.

• Contact Tech

Support

S3 MEM 2, 7 2 blinks followed by a

short pause, 7 blinks,

long pause, then

repeats

Memory failures • Memory

subsystem

conguration

activity is in

progress.

Appropriate

memory modules

were detected

but a memory

failure has

occurred.

• If you can assist

to troubleshoot,

narrow down the

issue with

reseating

memory and

swapping a

known good

memory if

available.

• If nothing works,

contact Tech

Support.

S4 PCI 3, 1 3 blinks followed by a

short pause, 1 blink,

long pause, then

repeats

PCI Device or Video

subsystem failures • PCI device

conguration

activity is in

progress or PCI

device failure

was detected.

• If you can assist

to troubleshoot,

narrow down the

issue by

reseating PCI

card and

removing one by

Troubleshooting 91

State State Name Power Light: Amber

Blinking

Amber Blinking

Pattern

Problem Description Suggested

Resolution

one to determine

which card failed.

• Contact Tech

Support.

S5 VID 3, 2 3 blinks followed by a

short pause, 2 blinks,

long pause, then

repeats

Video Subsystem

failure • Video subsystem

conguration

activity in

progress or video

subsystem

failure.

• If customer can

assist to

troubleshoot,

narrow down the

issue by

removing one by

one to determine

which card failed.

• Contact Tech

Support.

S6 STO 3, 3 3 blinks followed by a

short pause, 3 blinks,

long pause, then

repeats

No Memory

detected • If customer can

assist to

troubleshoot,

narrow down the

issue by

removing the

memory module

one by one to

determine which

one failed and

swapping to a

known good

memory if

available to

conrm.

• Contact Tech

Support.

S7 USB 3, 4 3 blinks followed by a

short pause, 4 blinks,

long pause, then

repeats

Storage Subsystem

failure • Possible storage

device

conguration in

progress or

storage

subsystem

failure.

• If you can assist

to troubleshoot,

narrow down the

issue by

removing the

storages on

motherboard to

determine which

one failed.

• Contact Tech

Support.

S8 MEM 3, 5 3 blinks followed by a

short pause, 5 blinks,

long pause, then

repeats

Memory

conguration or

incompatible error

• Memory

subsystem

conguration

activity is in

progress. No

92 Troubleshooting

State State Name Power Light: Amber

Blinking

Amber Blinking

Pattern

Problem Description Suggested

Resolution

memory modules

were detected.

• If customer can

assist to

troubleshoot,

narrow down the

issue by

removing one by

one the memory

on motherboard

to determine

which one failed.

Also, combining

the conguration

to validate

appropriate

combination.

• Contact Tech

Support

S9 MBF 3, 6 3 blinks followed by a

short pause, 6 blinks,

long pause, then

repeat

System board failure • Fatal system

board failure

detected.

• If customer can

assist to

troubleshoot,

narrow down the

issue by

removing one by

one the

component on

motherboard to

determine which

one failed.

• If you identied

any of the

components

failed, replace

the component.

• Contact Tech

Support

S10 MEM 3, 7 3 blinks followed by a

short pause, 7 blinks,

long pause, then

repeats

Possible memory

failure • Memory

subsystem

conguration

activity is in

progress.

Memory modules

have been

detected but

appear to be

incompatible or

in an invalid

conguration.

• If customer can

assist to

troubleshoot,

narrow down the

issue by

removing one by

one the memory

on motherboard

to determine

which one failed.

Troubleshooting 93

State State Name Power Light: Amber

Blinking

Amber Blinking

Pattern

Problem Description Suggested

Resolution

• Contact Tech

Support.

94 Troubleshooting

Contacting Dell

NOTE: If you do not have an active Internet connection, you can nd contact information on your purchase invoice, packing slip,

bill, or Dell product catalog.

Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services

may not be available in your area. To contact Dell for sales, technical support, or customer service issues:

1 Go to Dell.com/support.

2 Select your support category.

3 Verify your country or region in the Choose a Country/Region drop-down list at the bottom of the page.

4 Select the appropriate service or support link based on your need.

Contacting Dell 95

Table of Contents

DELL T7920 User Manual

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