A new device is not recognized as part of the system.
Cause
Solution
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 does not start.
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 DIMM2, and DIMM3 must be
installed before DIMM4.
2.
Observe the beeps and LED lights on the front of the
computer. Beeps and flashing LEDs are codes for specific
problems.
3.
If you still cannot resolve the issue, contact Customer
Support.
Power LED flashes red three times and then white two times.
Cause
Solution
Memory is installed incorrectly or is bad.
IMPORTANT:
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. Power on the system.
2.
Replace DIMMs one at a time to isolate the faulty module.
NOTE:
DIMM1 or XMM1 must always be installed. DIMM1
must be installed before DIMM2, and DIMM3 must be
installed before DIMM4
3.
Replace third-party memory with HP memory.
4.
Replace the system board.
86
Chapter 5 Troubleshooting without diagnostics
Summary of Contents for EliteDesk 800 G5
Page 1: ...Maintenance and Service Guide HP EliteDesk 800 G5 SFF ...
Page 4: ...iv Safety warning notice ...
Page 9: ...Index 139 ix ...
Page 10: ...x ...
