HP EliteDesk 800 G1 Maintenance & Service Manual page 150

Table 10-2
Activity
Red Power LED flashes nine
times, once every second,
followed by a two second
pause. Beeps stop after fifth
iteration but LEDs continue until
problem is solved.
Red Power LED flashes eleven
times, once every second,
followed by a two second
pause. Beeps stop after fifth
iteration but LEDs continue until
problem is solved.
Red Power LED flashes eleven
times, once every second,
followed by a two second
pause. Beeps stop after fifth
iteration but LEDs continue until
problem is solved.
System does not power on and
LEDs are not flashing.
142 Chapter 10 POST Error Messages
Diagnostic front panel LEDs and audible codes (continued)
Beeps
9
11
12
None
Possible Cause Recommended Action
System powers on but is 1.
unable to boot.
2.
3.
1.
The current processor does
not support a feature
2.
previously enabled on this
system.
3.
MXM thermal shutdown. 1.
2.
3.
System unable to power Press and hold the power button for less than 4
on. seconds. If the hard drive LED turns white, the
power button is working correctly. Try the
following:
1.
OR
Press and hold the power button for less than 4
seconds. If the hard drive LED does not turn on
white then:
1.
2.
3.
4.
Unplug the AC power cord from the
computer, wait 30 seconds, then plug the
power cord back in to the computer.
Replace the system board.
Replace the processor.
Install a TXT capable processor.
Disable TXT in the Computer Setup (F10)
utility.
Reinstall the original processor.
Clean the MXM graphics card heat sink.
Replace the MXM graphics card heat sink.
Replace the MXM graphic card.
Replace the system board.
Check that the unit is plugged into a
working AC outlet.
Open rear cover and check that the power
button cable is properly connected to the
system board.
Check to see if the 5V_aux light on the
system board is turned on. If it is turned on,
then replace the power button board and
cable. If the problem persists, replace the
system board.
Replace the AC adapter.