HP EliteDesk 800 G6 Maintenance and Service Guide - Page 76

A new device is not recognized as part of the system, Computer will not start

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A new device is not recognized as part of the system Use this information to troubleshoot the computer. Cause Solution Cables of new external device are loose or power cables are unplugged. Be sure that all cables are properly and securely connected and that pins in the cable or connector are not bent down. Power switch of new external device is not turned on. Turn off the computer, turn on the external device, and then turn on the computer to integrate the device with the computer system. When the system advised you of changes to the configuration, Reboot the computer and follow the instructions for accepting the you did not accept them. changes. A plug and play board might not automatically configure when added if the default configuration conflicts with other devices. Use Windows Device Manager to clear the automatic settings for the board, and choose a basic configuration that does not cause a resource conflict. You can also use Computer Setup to reconfigure or disable devices to resolve the resource conflict. To access Device Manager in Windows 10, type device manager in the taskbar search box, and then select Device Manager from the list of applications. USB ports on the computer are disabled in Computer Setup. Run the Computer Setup utility and ensure that Device available is selected for appropriate USB ports under Advanced > Port Options. Computer will not start Use this information to troubleshoot the computer. Cause Wrong memory modules were used in the upgrade, or memory modules were installed in the wrong location. Solution 1. Review the documentation that came with the system to determine if you are using the correct memory modules and to verify the proper installation. NOTE: DIMM1 or XMM1 must always be installed. DIMM1 must be installed before DIMM3. 2. Observe the beeps and lights on the front of the computer. Beeps and blinking lights are codes for specific problems. 3. If you still cannot resolve the issue, contact Customer Support. Power light blinks red three times and then white two times Use this information to troubleshoot the computer. Cause Memory is installed incorrectly or is bad. Solution To avoid damage to the DIMMs or the system board, you must unplug the computer power cord before attempting to reseat, install, or remove a DIMM module. 1. Reseat DIMMs. Turn on the system. 2. Replace DIMMs one at a time to isolate the faulty module. 66 Chapter 5 Troubleshooting without diagnostics

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A new device is not recognized as part of the system
Use this information to troubleshoot the computer.
Cause
Solution
Cables of new external device are loose or power cables are
unplugged.
Be sure that all cables are properly and securely connected and
that pins in the cable or connector are not bent down.
Power switch of new external device is not turned on.
Turn
off
the computer, turn on the external device, and then turn
on the computer to integrate the device with the computer
system.
When the system advised you of changes to the
configuration,
you did not accept them.
Reboot the computer and follow the instructions for accepting the
changes.
A plug and play board might not automatically
configure
when
added if the default
configuration
conflicts
with other devices.
Use Windows Device Manager to clear the automatic settings for
the board, and choose a basic
configuration
that does not cause a
resource
conflict.
You can also use Computer Setup to
reconfigure
or disable devices to resolve the resource
conflict.
To access
Device Manager in Windows 10, type
device manager
in the
taskbar search box, and then select
Device Manager
from the list
of applications.
USB ports on the computer are disabled in Computer Setup.
Run the Computer Setup utility and ensure that
Device available
is selected for appropriate USB ports under
Advanced
>
Port
Options
.
Computer will not start
Use this information to troubleshoot the computer.
Cause
Solution
Wrong memory modules were used in the upgrade, or memory
modules were installed in the wrong location.
1.
Review the documentation that came with the system to
determine if you are using the correct memory modules and
to verify the proper installation.
NOTE:
DIMM1 or XMM1 must always be installed. DIMM1
must be installed before DIMM3.
2.
Observe the beeps and lights on the front of the computer.
Beeps and blinking lights are codes for
specific
problems.
3.
If you still cannot resolve the issue, contact Customer
Support.
Power light blinks red three times and then white two times
Use this information to troubleshoot the computer.
Cause
Solution
Memory is installed incorrectly or is bad.
To avoid damage to the DIMMs or the system board, you must
unplug the computer power cord before attempting to reseat,
install, or remove a DIMM module.
1.
Reseat DIMMs. Turn on the system.
2.
Replace DIMMs one at a time to isolate the faulty module.
66
Chapter 5
Troubleshooting without diagnostics