Table of Contents
- Notices
- Safety information
- Conventions used in this guide
- Where to find more information
- Package contents
- Chapter 1: Getting started
- Chapter 2: Connecting devices to your computer
- Chapter 3: Using your computer
- Chapter 4: Connecting to the Internet
- Chapter 5: Troubleshooting
- Appendix: Windows® 10 User Manual
- ASUS contact information
ASUS G21CX-79D28P User Manual
Displayed below is the user manual for G21CX-79D28P by ASUS which is a product in the PCs/Workstations category. This manual has pages.
Related Manuals
Desktop PC
G21CN-D
User Guide
2
Copyright © 2019 ASUSTeK Computer Inc. All Rights Reserved.
No part of this manual, including the products and software described in it, may be reproduced, transmitted,
transcribed, stored in a retrieval system, or translated into any language in any form or by any means, except
documentation kept by the purchaser for backup purposes, without the express written permission of ASUSTeK
Computer Inc. (“ASUS”).
Product warranty or service will not be extended if: (1) the product is repaired, modified or altered, unless such
repair, modification of alteration is authorized in writing by ASUS; or (2) the serial number of the product is
defaced or missing.
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE
LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR
LOSS OF PROFITS, LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE), EVEN IF
ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS
MANUAL OR PRODUCT.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR INFORMATIONAL USE
ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A
COMMITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES
THAT MAY APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
Products and corporate names appearing in this manual may or may not be registered trademarks or copyrights
of their respective companies, and are used only for identification or explanation and to the owners’ benefit,
without intent to infringe.
E15544
First Edition (V1)
May 2019
3
Contents
Notices ................................................................................................................................................ 4
Safety information ...........................................................................................................................9
Conventions used in this guide.................................................................................................10
Where to find more information ...............................................................................................10
Package contents ...........................................................................................................................11
Chapter 1: Getting started
Welcome! ........................................................................................................................................... 12
Getting to know your computer ...............................................................................................12
Setting up your computer...........................................................................................................16
Turning your computer ON ........................................................................................................17
Chapter 2: Connecting devices to your computer
Connecting a USB storage device ............................................................................................18
Connecting microphone and speakers ..................................................................................19
Connecting multiple external displays ..................................................................................22
Chapter 3: Using your computer
Proper posture when using your Desktop PC ...................................................................... 23
Chapter 4: Connecting to the Internet
Wired connection ........................................................................................................................... 24
Wi-Fi connection (on selected models only) ........................................................................28
Chapter 5: Troubleshooting
Troubleshooting .............................................................................................................................29
Appendix: Windows® 10 User Manual
Starting for the first time .............................................................................................................39
Using the Windows® 10 UI ...........................................................................................................40
Keyboard shortcuts .......................................................................................................................44
ASUS contact information
ASUS contact information ...........................................................................................................46
4
Notices
ASUS Recycling/Takeback Services
ASUS recycling and takeback programs come from our commitment to the highest standards for
protecting our environment. We believe in providing solutions for you to be able to responsibly
recycle our products, batteries, other components, as well as the packaging materials. Please go to
http://csr.asus.com/english/Takeback.htm for the detailed recycling information in different regions.
REACH
Complying with the REACH (Registration, Evaluation, Authorisation, and Restriction of Chemicals)
regulatory framework, we published the chemical substances in our products at ASUS REACH
website at http://csr.asus.com/english/REACH.htm
Federal Communications Commission Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
• Thisdevicemaynotcauseharmfulinterference;and
• Thisdevicemustacceptanyinterferencereceivedincludinginterferencethatmaycause
undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with manufacturer’s
instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interference by one or more of
the following measures:
• Reorientorrelocatethereceivingantenna.
• Increasetheseparationbetweentheequipmentandreceiver.
• Connecttheequipmenttoanoutletonacircuitdierentfromthattowhichthereceiveris
connected.
• Consultthedealeroranexperiencedradio/TVtechnicianforhelp.
The use of shielded cables for connection of the monitor to the graphics card is required to
assure compliance with FCC regulations. Changes or modifications to this unit not expressly
approved by the party responsible for compliance could void the user’s authority to operate this
equipment.
Lithium Battery Warning
CAUTION: Danger of explosion if battery is incorrectly replaced. Replace only with the same
or equivalent type recommended by the manufacturer. Dispose of used batteries according
to the manufacturer’s instructions.
5
Compliance Statement of Innovation, Science and Economic Development
Canada (ISED)
This device complies with Innovation, Science, and Economic Development Canada licence exempt
RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must accept any interference, including interference that may
cause undesired operation of the device:
Operation in the band 5150–5250 MHz is only for indoor use to reduce the potential for harmful
interference to co-channel mobile satellite systems.
CAN ICES-3(B)/NMB-3(B)
Déclaration de conformité de Innovation, Sciences et Développement
économique Canada (ISED)
Le présent appareil est conforme aux CNR d’Innovation, Sciences et Développement économique
Canadaapplicables aux appareils radio exempts de licence. L’exploitation est autorisée aux deux
conditions suivantes : (1) l’appareil ne doit pas produire de brouillage, et (2) l’utilisateur de l’appareil
doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en
compromettre le fonctionnement.
La bande 5150 – 5250 MHz est réservée uniquement pour une utilisation à l’intérieur afin de réduire
les risques de brouillage préjudiciable aux systèmes de satellites mobiles utilisant les mêmes
canaux.
CAN ICES-3(B)/NMB-3(B)
IC: Canadian Compliance Statement
Complies with the Canadian ICES-003 Class B specifications. This device complies with RSS 210
of Industry Canada. This Class B device meets all the requirements of the Canadian interference-
causing equipment regulations.
This device complies with Industry Canada license exempt RSS standard(s). Operation is subject
to the following two conditions: this device may not cause interference, and (2) this device must
accept any interference, including interference that may cause undesired operation of the device.
Déclaration de conformité d’Industrie Canada
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada. Cet appareil
numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du
Canada.
Le présent appareil est conforme aux normes CNR d’Industrie Canada applicables aux appareils
radio exempts de licence. Son utilisation est sujette aux deux conditions suivantes : (1) cet appareil
ne doit pas créer d’interférences et (2) cet appareil doit tolérer tout type d’interférences, y compris
celles susceptibles de provoquer un fonctionnement non souhaité de l’appareil.
Avertissement relatif aux batteries Lithium
ATTENTION ! Danger d’explosion si la batterie n’est pas correctement remplacée. Remplacer
uniquement avec une batterie de type semblable ou équivalent, recommandée par le
fabricant. Jeter les batteries usagées conformément aux instructions du fabricant.
6
VCCI: Japan Compliance Statement
VCCI Class B Statement
This is a Class B product based on the standard of the VCCI Council. If this is used near a radio or
television receiver, it may cause radio interference. Install and use equipment according to the
instruction manual.
Equipment registered based on the confirmation measurement at the user
installation site.
This is a product for which interference was measured at the present installation site and confirmed
to comply with the standard of Voluntary Control Council for Interference by Information
Technology Equipment (VCCI). Before using the equipment at any location other than the present
installation site, the member shall measure interference for confirmation and register the result to
VCCI.
India E-Waste (Management) Rules 2016
This product complies with the “India E-Waste (Management) Rules, 2016” and prohibits use of lead,
mercury, hexavalent chromium, polybrominated biphenyls (PBBs) and polybrominated diphenyl
ethers (PBDEs) in concentrations exceeding 0.1% by weight in homogenous materials and 0.01 %
by weight in homogenous materials for cadmium, except for the exemptions listed in Schedule II of
the Rule.
Canadian Department of Communications Statement
This digital apparatus does not exceed the Class B limits for radio noise emissions from digital
apparatus set out in the Radio Interference Regulations of the Canadian Department of
Communications.
This class B digital apparatus complies with Canadian ICES-003.
Déclaration du Département Canadien des Communications
Cet appareil numérique ne dépasse pas les limites de classe B en terme d’émissions de
nuisances sonores, par radio, par des appareils numériques, et ce conformément aux régulations
d’interférence par radio établies par le département canadien des communications.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
7
BSMI: Taiwan Wireless Statement
Japan RF Equipment Statement
KC (RF Equipment)
RF Equipment Notices
CE: European Community Compliance Statement
The equipment complies with the RF Exposure Requirement 1999/519/EC, Council
Recommendation of 12 July 1999 on the limitation of exposure of the general public to
electromagnetic fields (0–300 GHz).
Wireless Radio Use
This device is restricted to indoor use when operating in the 5.15 to 5.25 GHz frequency band.
For the standard EN 300 440 V2.1.1, the device operating in 802.11a/n/ac mode is considered as a
receiver category 2.
Exposure to Radio Frequency Energy
The radiated output power of the Wi-Fi technology is below the FCC radio frequency exposure
limits. Nevertheless, it is advised to use the wireless equipment in such a manner that the potential
for human contact during normal operation is minimized.
FCC Bluetooth Wireless Compliance
The antenna used with this transmitter must not be colocated or operated in conjunction with any
other antenna or transmitter subject to the conditions of the FCC Grant.
Bluetooth Industry Canada Statement
This Class B device meets all requirements of the Canadian interference-causing equipment
regulations.
Cet appareil numérique de la Class B respecte toutes les exigences du Règlement sur le matériel
brouilleur du Canada.
8
Simplified EU Declaration of Conformity
ASUSTek Computer Inc. hereby declares that this device is in compliance with the essential
requirements and other relevant provisions of Directive 2014/53/EU. Full text of EU declaration of
conformity is available at https://www.asus.com/support/.
The Wi-Fi operating in the band 5150-5350MHz shall be restricted to indoor use for countries listed
in the table below:
AT BE BG CZ DK EE FR
DE IS IE IT EL ES CY
LV LI LT LU HU MT NL
NO PL PT RO SI SK TR
FI SE CH UK HR
Service warning label
WARNING! INVISIBLE LASER RADIATION WHEN OPEN. DO NOT STARE INTO BEAM OR VIEW
DIRECTLY WITH OPTICAL INSTRUMENTS.
CDRH Regulations
The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug Administration
implemented regulations for laser products on August 2, 1976. These regulations apply to laser
products manufactured from August 1, 1976. Compliance is mandatory for products marketed in
the United States.
WARNING! Use of controls or adjustments or performance of procedures other than those
specified herein or in the laser product installation guide may result in hazardous radiation
exposure.
Optical Drive Safety Information
Laser Safety Information
9
Safety information
Disconnect the AC power and peripherals before cleaning. Wipe the Desktop PC using a clean
cellulose sponge or chamois cloth dampened with solution of nonabrasive detergent and a few
drops of warm water then remove any extra moisture with a dry cloth.
• DO NOT place on uneven or unstable work surfaces. Seek servicing if the casing has been
damaged.
• DO NOT expose to dirty or dusty environments. DO NOT operate during a gas leak.
• DO NOT place or drop objects on top and do not shove any foreign objects into the Desktop
PC.
• DO NOT expose to strong magnetic or electrical fields.
• DO NOT expose to or use near liquids, rain, or moisture. DO NOT use the modem during
electrical storms.
• Batterysafetywarning:DO NOT throw the battery in fire. DO NOT short circuit the contacts.
DO NOT disassemble the battery.
• Usethisproductinenvironmentswithambienttemperaturesbetween0˚C(32˚F)and35˚C
(95˚F).
• DO NOT cover the vents on the Desktop PC to prevent the system from getting overheated.
• DO NOT use damaged power cords, accessories, or other peripherals.
•
To prevent electrical shock hazard, disconnect the power cable from the electrical outlet
before relocating the system.
•
Seek professional assistance before using an adapter or extension cord. These devices could
interrupt the grounding circuit.
•
Ensure that your power supply is set to the correct voltage in your area. If you are not sure
about the voltage of the electrical outlet you are using, contact your local power company.
•
If the power supply is broken, do not try to fix it by yourself. Contact a qualified service
technician or your retailer.
Hazardous moving parts. Desktop should be completely shutdown before servicing product.
Replacing fan components should only be attempted by qualified service personnel.
Hazardous Moving Parts Warning
WARNING: Keep fingers and other body parts away from any moving parts.
10
Conventions used in this guide
To ensure that you perform certain tasks properly, take note of the following symbols used
throughout this manual.
Where to find more information
Refer to the following sources for additional information and for product and software updates.
ASUS websites
The ASUS website provides updated information on ASUS hardware and software products.
Refer to the ASUS website www.asus.com.
ASUS Local Technical Support
Visit ASUS website at http://support.asus.com/contact for the contact information of local
Technical Support Engineer.
DANGER/WARNING: Information to prevent injury to yourself when trying to
complete a task.
CAUTION: Information to prevent damage to the components when trying to
complete a task.
IMPORTANT: Instructions that you MUST follow to complete a task.
NOTE: Tips and additional information to help you complete a task.
11
Package contents
• Ifanyoftheaboveitemsisdamagedormissing,contactyourretailer.
• Theillustrateditemsaboveareforreferenceonly.Actualproductspecicationsmayvarywith
different models.
Desktop PC
G21CN-D
Keyboard x1 Mouse x1
Power cord x1
2nd Power cord x1
Power adapter x1
2nd adapter x1
Warranty Card x1
Installation Guide
Installation Guide x1
Welcome!
Thank you for purchasing the ASUS Desktop PC!
The ASUS Desktop PC provides cutting-edge performance, uncompromised reliability, and user-
centric utilities. All these values are encapsulated in a stunningly futuristic and stylish system
casing.
Read the ASUS Warranty Card before setting up your ASUS Desktop PC.
Getting to know your computer
Illustrations are for reference only. The ports, their locations and the chassis color vary with
different models.
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ASUS G21CN-D 12
Chapter 1
Getting started
Front
Power button. Press this button to turn on your computer.
Optical disk drive bay. There is an optical disk drive in this bay.
Optical disk drive eject button. Press this button to eject the optical disk drive tray.
Microphone port. This port connects to a microphone.
Headphone port. This port connects to a headphone or speaker.
LED Lighting Effect. Customizable via the lighting control in ASUS Command, this LED
lighting effect shows through the pattern.
USB 3.1 Gen 1 ports. These ports connect to USB 3.1 Gen 1 devices such as a mouse,
printer, scanner, camera, PDA, and others.
USB 3.1 Gen 1 port (Type-C). This port connects to USB Type-C devices for data
transfer at USB 3.1 Gen 1 speed.
• USB3.1Gen2/Gen1devicescanonlybeusedfordatastorage.
• WestronglyrecommendthatyouconnectUSB3.1Gen2devicestoUSB3.1Gen2portsfor
faster and better performance for your USB 3.1 Gen 2 devices.
ASUS G21CN-D 13
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Rear
USB 3.1 Gen 2 (Type A) ports. These 9-pin Universal Serial Bus (USB) ports connect to
USB 3.1 Gen 2 devices.
USB 3.1 Gen 1 ports. These ports connect to USB 3.1 Gen 1 devices such as a mouse,
printer, scanner, camera, PDA, and others.
• USB3.1Gen2/Gen1devicescanonlybeusedfordatastorage.
• WestronglyrecommendthatyouconnectUSB3.1Gen2devicestoUSB3.1Gen2portsfor
faster and better performance for your USB 3.1 Gen 2 devices.
LAN (RJ-45) port. This port allows Gigabit connection to a Local Area Network (LAN)
through a network hub.
Activity/Link LED Speed LED
Status Description Status Description
OFF No link OFF 10Mbps connection
ORANGE Linked ORANGE 100Mbps connection
Orange (Blinking) Data activity GREEN 1Gbps connection
Orange (Blinking
then steady)
Ready to wake up
from S5 mode
- - LAN port
SPEED
LED
ACT/LINK
LED
LAN port LED indications
14 Chapter 1: Getting started
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Audio 2.1, 4.1, 5.1, or 7.1-channel configuration
Kensington® lock slot. This slot is used to secure the desktop PC using a Kensington®
compatible PC security cable.
ASUS Graphics Cards. The display output ports on these optional ASUS Graphics Cards
may vary with different models.
Power jack 2. This port connects to a 180W or 230W adapter.
Adapter rating:
• 180W
Input rating: 100-240V, 2.34A, 50-60Hz
Output rating: 20V, 9A
• 230W
Input rating: 100-240V, 3.2A, 50-60Hz
Output rating: 19.5V, 11.8A
• 280W
Input rating: 100-240V, 3.2A, 50-60Hz
Output rating: 20V, 14A
Power jack 1. This port connects to a 180W adapter.
Adapter rating:
• 180W
Input rating: 100-240V, 2.34A, 50-60Hz
Output rating: 20V, 9A
Microphone port (pink). This port connects to a microphone.
Line Out port (lime). This port connects to a headphone or speaker. In a 4.1, 5.1,
or 7.1-channel configuration, the function of this port becomes Front Speaker Out.
Supported by ASUS Audio Wizard.
Line In port (light blue). This port connects to a tape, CD, DVD player, or other audio
sources.
Port Headset 2.1-channel 4.1-channel 5.1-channel 7.1-channel
Light Blue (Rear panel) Line In Rear Speaker Out Rear Speaker Out Rear Speaker Out
Lime (Rear panel) Line Out Front Speaker Out Front Speaker Out Front Speaker Out
Pink (Rear panel) Mic In Mic In Bass/Center Bass/Center
Lime (Front panel) - - - Side Speaker Out
Refer to the audio configuration table below for the function of the audio ports in a 2.1, 4.1, 5.1,
or 7.1-channel configuration.
ASUS G21CN-D 15
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Air vents. These vents allow air ventilation.
DO NOT block the air vents on the chassis. Always provide proper ventilation for your
computer.
Setting up your computer
This section guides you through connecting the main hardware devices, such as the external
monitor, keyboard, mouse, and power cord, to your computer.
Connecting an external monitor
To connect an external monitor:
1. Connect your monitor to the graphic output port of the discrete graphic card.
2. Plug the monitor to a power source.
Connecting a USB keyboard and a USB mouse
Connect a USB keyboard and a USB mouse to the USB ports on the rear panel of your computer.
`
Optical S/PDIF out port. This port allows you to connect your PC to amplified speakers,
headphones, or Sony/Phillips Digital Interconnect Format (S/PDIF) compliant devices.
16 Chapter 1: Getting started
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3. Wait until the operating system loads automatically.
Power button
Turning your computer ON
This section describes how to turn on your computer after setting up your computer.
Turning your computer ON
To turn your computer ON:
1. Turn your monitor ON.
2. Press the power button on your computer.
ASUS G21CN-D 17
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Connecting a USB storage device
This desktop PC provides USB 3.1 Gen 1 and USB 3.1 Gen 2 ports on the front and rear panels. The
USB ports allow you to connect USB devices such as storage devices.
To connect a USB storage device:
• InserttheUSBstoragedevicetoyourcomputer.
Front panel
Rear panel
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ASUS G21CN-D 18
Chapter 2
Connecting devices to your computer
Connecting Headphone and Mic
Connecting microphone and speakers
This desktop PC comes with microphone ports and speaker ports on both the front and rear panels.
The audio I/O ports located on the rear panel allow you to connect 2.1-channel, 4.1-channel,
5.1-channel, and 7.1-channel stereo speakers.
Connecting 2.1-channel Speakers
ASUS G21CN-D 19
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Connecting 4.1-channel Speakers
Connecting 5.1-channel Speakers
20 Chapter 2: Connecting devices to your computer
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Connecting 7.1-channel Speakers
LINE OUT
ASUS G21CN-D 21
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Connecting multiple external displays
Your desktop PC may come with VGA, HDMI, or DVI ports and allows you to connect multiple
external displays.
The display output ports on the ASUS Graphics Card may vary with different models.
Setting up multiple displays
When using multiple monitors, you are allowed to set display modes. You can use the additional
monitor as a duplicate of your main display, or as an extension to enlarge your Windows desktop.
To set up multiple displays:
1. Turn off your computer.
2. Connect the two monitors to your computer and connect the power cords to the monitors.
Refer to Setting up your computer section in Chapter 1 for details on how to connect a
monitor to your computer.
3. Turn on your computer.
4. From the Start menu, click Settings > System > Display.
5. Configure the settings for your displays.
For some graphic cards, only the monitor that is set to be the primary display has display during
POST. The dual display function works only under Windows.
22 Chapter 2: Connecting devices to your computer
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ASUS G21CN-D 23
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Chapter 3
Using your computer
Proper posture when using your Desktop PC
When using your Desktop PC, maintaining the proper posture is necessary to prevent strain to your
wrists, hands, and other joints or muscles. This section provides you with tips on avoiding physical
discomfort and possible injury while using and fully enjoying your Desktop PC.
Eye level to the top of
the monitor screen
Foot rest
90˚ angles
To maintain the proper posture:
• Positionyourcomputerchairtomakesurethatyourelbowsareatorslightlyabovethe
keyboard to get a comfortable typing position.
• Adjusttheheightofyourchairtomakesurethatyourkneesareslightlyhigherthanyour
hips to relax the backs of your thighs. If necessary, use a footrest to raise the level of your
knees.
• Adjustthebackofyourchairsothatthebaseofyourspineisrmlysupportedandangled
slightly backward.
• Situprightwithyourknees,elbowsandhipsatanapproximately90ºanglewhenyouareat
the PC.
• Placethemonitordirectlyinfrontofyou,andturnthetopofthemonitorscreenevenwith
your eye level so that your eyes look slightly downward.
• Keepthemouseclosetothekeyboard,andifnecessary,useawristrestforsupportto
reduce the pressure on your wrists while typing.
• UseyourDesktopPCinacomfortably-litarea,andkeepitawayfromsourcesofglaresuchas
windows and straight sunlight.
• Takeregularmini-breaksfromusingyourDesktopPC.
Wired connection
Use an RJ-45 cable to connect your computer to a DSL/cable modem or a local area network (LAN).
Connecting via a DSL/cable modem
To connect via a DSL/cable modem:
1. Set up your DSL/cable modem.
Refer to the documentation that came with your DSL/cable modem.
2. Connect one end of an RJ-45 cable to the LAN (RJ-45) port on the rear panel of your
computer and the other end to a DSL/cable modem.
Modem
RJ-45 cable
3. Turn on the DSL/cable modem and your computer.
4. Configure the necessary Internet connection settings.
• ContactyournetworkadministratorfordetailsorassistanceinsettingupyourInternet
connection.
• Formoredetails,refertothesectionsConfiguring a dynamic IP/PPPoE network connection
or Configuring a static IP network connection.
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ASUS G21CN-D 24
Chapter 4
Connecting to the Internet
LAN
RJ-45 cable
Connecting via a local area network (LAN)
To connect via a LAN:
1. Connect one end of an RJ-45 cable to the LAN (RJ-45) port on the rear panel of your
computer and the other end to your LAN.
2. Turn on your computer.
3. Configure the necessary Internet connection settings.
• ContactyournetworkadministratorfordetailsorassistanceinsettingupyourInternet
connection.
• Formoredetails,refertothesectionsConfiguring a dynamic IP/PPPoE network connection
or Configuring a static IP network connection.
ASUS G21CN-D 25
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Configuring a dynamic IP/PPPoE network connection
To configure a dynamic IP/PPPoE network connection:
1. Launch Network and Sharing Center in either of these two ways:
a) From the taskbar, right-click , then click Open Network and Sharing Center.
b) From the Start menu, click Settings > Network & Internet > Ethernet > Network and
Sharing Center.
2. From the Open Network and Sharing Center screen, click Change Adapter settings.
3. Right-click on your LAN and select
Properties.
4. Click Internet Protocol Version 4(TCP/
IPv4) and click Properties.
5. Click Obtain an IP address automatically
and click OK.
Continue to the next steps if you are using PPPoE connection.
26 Chapter 4: Connecting to the Internet
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8. Select Connect to the Internet and
click Next.
7. Return to the Network and
Sharing Center and then click
Set up a new connection or
network.
9. Select Broadband (PPPoE) and click
Next.
10. Follow the next onscreen instructions to
complete the setup.
Configuring a static IP network connection
To configure a static IP network connection:
1. Repeat steps 1 to 4 of the previous section.
2 Click Use the following IP address.
3. Enter the IP address, Subnet mask and Gateway
from your service provider.
4. If needed, enter the preferred DNS Server
address and alternative address.
5. When done, click OK.
ASUS G21CN-D 27
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Wi-Fi connection (on selected models only)
Connect your computer to the Internet through a wireless connection.
To establish a wireless connection, you need to connect to a wireless access point (AP).
Modem
Wireless AP
28 Chapter 4: Connecting to the Internet
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ASUS G21CN-D 29
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Chapter 5
Troubleshooting
Troubleshooting
This chapter presents some problems you might encounter and the possible solutions.
?
My computer cannot be powered on and the power LED on the front panel
does not light up.
• Checkifyourcomputerisproperlyconnected.
• Checkifthewalloutletisfunctioning.
• CheckifthePowerSupplyUnitisswitchedon.RefertothesectionTurning your
computer ON in Chapter 1.
?
My computer hangs.
• Dothefollowingtoclosetheprogramsthatarenotresponding:
1. Simultaneously press <Alt> + <Ctrl> + <Delete> keys on the keyboard, then
click Task Manager.
2. Select the program that is not responding, then click End Task.
• Ifthekeyboardisnotresponding,pressandholdthePowerbuttononthetopof
your chassis until the computer shuts down. Then press the Power button to turn it
on.
?
I cannot connect to a wireless network using the ASUS WLAN Card (on
selected models only)?
• Ensurethatyouenterthecorrectnetworksecuritykeyforthewirelessnetworkyou
want to connect to.
• Connecttheexternalantennas(optional)totheantennaconnectorsontheASUS
WLAN Card and place the antennas on the top of your computer chassis for the
best wireless performance.
30 Chapter 5: Troubleshooting
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?
The arrow keys on the number key pad are not working.
Check if the Number Lock LED is off. When the Number Lock LED is on, the keys on
the number key pad are used to input numbers only. Press the Number Lock key to
turn the LED off if you want to use the arrow keys on the number key pad.
?
No display on the monitor.
• Checkifthemonitorispoweredon.
• Ensurethatyourmonitorisproperlyconnectedtothevideooutputportonyour
computer.
• Ifyourcomputercomeswithadiscretegraphicscard,ensurethatyouconnectyour
monitor to a video output port on the discrete graphics card.
• Checkifanyofthepinsonthemonitorvideoconnectorisbent.Ifyoudiscover
bent pins, replace the monitor video connector cable.
• Checkifyourmonitorispluggedtoapowersourceproperly.
• Refertothedocumentationthatcamewithyourmonitorformoretroubleshooting
information.
?
When using multiple monitors, only one monitor has display.
• Ensurethatthebothmonitorsarepoweredon.
• DuringPOST,onlythemonitorconnectedtotheVGAporthasdisplay.Thedual
display function works only under Windows.
• Whenagraphicscardisinstalledonyourcomputer,ensurethatyouconnectthe
monitors to the output port on the graphics card.
• Checkifthemultipledisplayssettingsarecorrect.
?
My computer cannot detect my USB storage device.
• ThersttimeyouconnectyourUSBstoragedevicetoyourcomputer,Windows
automatically installs a driver for it. Wait for a while and go to My Computer to
check if the USB storage device is detected.
• ConnectyourUSBstoragedevicetoanothercomputertotestiftheUSBstorage
device is broken or malfunctions.
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?
I want to restore or undo changes to my computer’s system settings
without affecting my personal files or data.
You can use Windows® 10 Refresh your PC without affecting your files recovery
option to restore or undo changes to your computer’s system settings without
affecting your personal data such as documents or photos. To use this recovery
option, click Settings > Update & recovery > Recovery from the Start menu,
select Refresh your PC without affecting your files, and click Get started.
?
The picture on the HDTV is distorted.
• ItiscausedbythedierentresolutionsofyourmonitorandyourHDTV.Adjustthe
screen resolution to fit your HDTV. To change the screen resolution:
• FromtheStartmenu,clickSettings > System > Display.
?
My speakers produce no sound.
• EnsurethatyouconnectyourspeakerstotheLineoutport(lime)onthefrontpanel
or the rear panel.
• Checkifyourspeakisconnectedtoanelectricalsourceandturnedon.
• Adjustyourspeakers’volume.
• Ensurethatyourcomputer’ssystemsoundsarenotMuted.
• Ifitismuted,thevolumeiconisdisplayedas . To enable the system
sounds, click from the Windows notification area, then click .
• Ifitisnotmuted,click and drag the slider to adjust the volume.
• Connectyourspeakerstoanothercomputertotestifthespeakersarerworking
properly.
?
The DVD drive cannot read a disc.
• Checkifthediscisplacedwiththelabelsidefacingup.
• Checkifthedisciscenteredinthetray,especiallyforthediscswith
non-standard size or shape.
• Checkifthediscisscratchedordamaged.
?
The DVD drive eject button is not responding.
1. From the Start menu, click File Explorer.
2. Right-click , then click Eject from the menu
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Power
Problem Possible Cause Action
No power
(The power
indicator is off)
Incorrect power voltage
•Setyourcomputer’spowervoltage
switch to your area’s power
requirements.
•Adjustthevoltagesettings.Ensurethat
the power cord is unplugged from the
power outlet.
Your computer is not turned
on.
Press the power key on the front panel to
ensure that your computer is turned on.
Your computer’s power cord
is not properly connected.
•Ensurethatthepowercordisproperly
connected.
•Useothercompatiblepowercord.
PSU (Power supply unit)
problems
Contact the ASUS Service Center about
installing another PSU on your computer.
Display
Problem Possible Cause Action
No display output
after turning the
computer on
(Black screen)
The signal cable is not
connected to the correct
VGA port on your computer.
•Connectthesignalcabletothecorrect
display port (onboard VGA or discrete
VGA port).
•IfyouareusingadiscreteVGAcard,
connect the signal cable to the discrete
VGA port.
Signal cable problems Try connecting to another monitor.
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LAN
Problem Possible Cause Action
Cannot access the
Internet
The LAN cable is not
connected.
Connect the LAN cable to your
computer.
LAN cable problems
Ensure the LAN LED is on. If not, try
another LAN cable. If it still does not
work, contact the ASUS service center.
Your computer is not
properly connected to a
router or hub.
Ensure that your computer is properly
connected to a router or hub.
Network settings Contact your Internet Service Provider
(ISP) for the correct LAN settings.
Problems caused by the anti-
virus software Close the anti-virus software.
Driver problems Reinstall the LAN driver
Audio
Problem Possible Cause Action
No Audio
Speaker or headphone is
connected to the wrong port.
•Refertoyourcomputer’sUserGuide
for the correct port.
•Disconnectandreconnectthespeaker
to your computer.
Speaker or headphone does
not work.
Try using another speaker or
headphone.
The front and back audio
ports do not work.
Try both the front and back audio ports.
If one port failed, check if the port is set
to multi-channel.
Driver problems Reinstall the audio driver
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System
Problem Possible Cause Action
System speed is
too slow
Too many programs are
running. Close some of the programs.
Computer virus attack
•Useananti-virussoftwaretoscanfor
viruses and repair your computer.
•Reinstalltheoperatingsystem.
The system often
hangs or freezes.
Hard disk drive failure
•Sendthedamagedharddiskdriveto
ASUS Service Center for servicing.
•Replacewithanewharddiskdrive.
Memory module problems
•Replacewithcompatiblememory
modules.
•Removetheextramemorymodules
that you have installed, then try again.
•Contact the ASUS Service Center for
assistance.
There is not enough
air ventilation for your
computer.
Move your computer to an area with
better air flow.
Incompatible softwares are
installed.
Reinstall the OS and reinstall
compatible softwares.
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CPU
Problem Possible Cause Action
Too noisy right
after turning on the
computer.
Your computer is booting up.
It is normal. The fan runs on its full
speed when the computer is powering
on. The fan slows down after entering
the OS.
The BIOS settings have been
changed. Restore the BIOS to its default settings.
Old BIOS version
Update the BIOS to the latest version.
Visit the ASUS Support site at http://
support.asus.com to download the
latest BIOS versions.
Computer is too
noisy when in use.
The CPU fan has been
replaced.
Ensure that you are using a compatible
or ASUS-recommended CPU fan.
There is not enough air
ventilation for the computer.
Ensure that your computer is working
in an area with good air flow.
The system temperature is
too high.
•UpdatetheBIOS.
•Ifyouknowhowtoreinstallthe
motherboard, try to clean the inner
space of the chassis.
•Contact the ASUS Service Center for
assistance.
If the problem still persists, refer to your Desktop PC’s warranty card and contact the ASUS Service
Center. Visit the ASUS Support site at http://support.asus.com for the service center information.
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ASUS Desktop PC
Windows® 10
User Manual
E10435
First Edition
May 2015
Copyright © ASUSTeK Computer Inc.
All Rights Reserved
Appendix
Windows® 10 User Manual
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Starting for the first time
When you start your computer for the first time, a series of screens appear to guide you in
configuring the basic settings of your Windows® 10 operating system.
To start your Desktop PC for the first time:
When you start your computer for the first time, a series of screens appear to guide you in
configuring the basic settings of your Windows® 10 operating system.
To start your Desktop PC for the first time:
1. Press the power button on your Desktop PC. Wait for a few minutes until the setup screen
appears.
2. From the setup screen, pick your region and language that you want to use on your desktop
PC.
3. Carefully read the License Terms, then tap I Accept.
4. Follow the onscreen instructions to configure the following basic items:
• Personalize
• Getonline
• Settings
• Youraccount
5. Wait until Windows® 10 finishes installing the apps and system settings. After the installation,
the Windows® 10 desktop appears.
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Click your account name to change the
picture, sign out of your account, or lock your
Desktop PC
Click to display all the apps
Click to put on sleep mode, shut down,
or restart your desktop PC
Click to expand the Start screen
Click to launch the Start menu
Pin on or launch
a tiled-format
app from the
Start screen
Pin on or launch an app
from the taskbar
Start menu
Windows® 10 brings back the Start menu with some enhancements, such as the space that you can
customizewithyourfavoriteapps,people,orwebsites.
YoucanlaunchtheStartmenuintwoways:
• ClicktheStartbuttonfromthelower-leftcornerofthetaskbar.
• PresstheWindows® Start key on your keyboard.
Pinning apps to the Start screen or taskbar
To pin an app to the Start screen or taskbar:
1. From the Start menu, click All apps, then select the app that you want to pin.
2. Click Pin to Start or Pin to taskbar to pin your selected app to the Start screen or taskbar.
YoucanalsodragthendropanapptotheStartScreenortaskbartopinit.
Using the Windows® 10 UI
The Windows®10UserInterface(UI)includesthefavoriteStartmenuandthetiled-formattedStart
screen. It includes the following features you can use while working on your Desktop PC.
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Start screen
TheStartscreen,whichappearstogetherwiththeStartmenu,helpsorganizealltheappsyouneed
injustoneplace.TheappsontheStartscreenaredisplayedontiled-formatforeasyaccess.
Some apps require signing in to your Microsoft account before they are fully launched.
Click to restore the
Start screen
Moving apps on the Start screen
YoucanmoveappsfromtheStartscreensimplythroughdragginganddroppingtheapptoyour
preferred location.
Unpinning apps from the Start screen
TounpinanappfromtheStartscreen,right-clickontheapptoactivateitssettingsbarthenclick
Unpin from Start.
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Taskbar
Windows® 10 comes with the standard taskbar, which keeps all your currently running apps or
items in the background.
Unpinning apps from the taskbar
1. FromtheStartscreenortaskbar,right-clicktheappyouwanttounpin.
2. Click Unpin from Start or Unpin this program from taskbar to remove the app from the
Start screen or taskbar.
Using the Task View
When you have several running apps, you can click from the taskbar to display all your
running apps, and click on an app or item to launch it.
If task view is disabled, click > Show Task View button to display the task view icon .
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Snap feature
The Snap feature displays about four apps or more in one screen, allowing you to work or switch
among apps.
Using Snap
Use your Desktop PC’s mouse or keyboard to activate Snap onscreen.
Using your mouse
a) Launch an app, then drag and release on a screen corner to snap it in place.
b) Snap another app to your preferred location on the screen.
Using your keyboard
a) Launch an app, press and the arrow keys to select the direction where you want to
snap the app in place.
b) Snap another app using and the arrow keys.
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Keyboard shortcuts
Using your keyboard, you can also use the following shortcuts to help you launch apps and
navigate Windows® 10.
Switches between the Start screen and the last running app
+ <D>
Launches the desktop
+ <E>
Launches File Explorer
+ <F> or
+ <W>
Activates the File search function
+ <H>
Launches Share
+ <I>
Launches Settings
+ <K>
Launches Media Connect
+ <L>
Activates the Lock screen
+ <M>
Hides all currently active screens to the taskbar
+ <P>
YourdesktopPCismirroredtoyoursecondarymonitor
+ <Q>
Launches Cortana
+ <R>
Launches the Run window
+ <U>
Launches Ease of Access Center
+ <X>
Launches a menu box of Windows tools
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3. Follow the onscreen instructions to complete the reinstallation and reset process.
Removing everything and reinstalling Windows® 10
Restoring your PC to its original factory settings can be done using the Remove everything and
reinstall options in PC Settings. Refer to the steps below to use this option.
Back up all your data before using this option.
This process may take a while to complete.
1. From the Start menu, click Settings > Update & security > Recovery.
2. Scroll down to view the Remove everything and reinstall Windows option. Under this
option, click Get started.
+ <+>
Launchesthemagnierandzoomsinyourscreen.
+<->
Zooms out your screen.
+ <Enter>
Opens the Narrator Settings.
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ASUS contact information
ASUS contact information
ASUSTeK COMPUTER INC.
Address 4F,No.150,Li-TeRd.,Peitou,Taipei112,Taiwan
Telephone +886-2-2894-3447
Fax +886-2-2890-7798
Web site www.asus.com/
Technical Support
Telephone +86-21-38429911
Fax +86-21-5866-8722,ext.9101#
Online support http://qr.asus.com/techserv
ASUS COMPUTER INTERNATIONAL (America)
Address 48720KatoRd.,Fremont,CA94538,USA
Telephone +1-510-739-3777
Fax +1-510-608-4555
Web site http://www.asus.com/us/
Technical Support
Supportfax +1-812-284-0883
Telephone +1-812-282-2787
Online support http://qr.asus.com/techserv
ASUS COMPUTER GmbH (Germany and Austria)
Address HarkortStr.21-23,D-40880Ratingen,Germany
Fax +49-2102-959931
Web site http://www.asus.com/de
Online contact http://eu-rma.asus.com/sales
Technical Support
Telephone +49-2102-5789555
SupportFax +49-2102-959911
Online support http://qr.asus.com/techserv