Activity Beeps Possible Cause Recommended Action
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.
12 MXM thermal shutdown. 1. Clean the MXM graphics card heat sink.
2. Replace the MXM graphics card heat sink.
3. Replace the MXM graphic card.
System does not power on and
LEDs are not flashing.
None System unable to power on. Press and hold the power button for less than 4
seconds. If the hard drive LED turns white, the power
button is working correctly. Try the following:
▲
Replace the system board.
OR
Press and hold the power button for less than 4
seconds. If the hard drive LED does not turn on white
then:
1. Check that the unit is plugged into a working
AC outlet.
2. Open rear cover and check that the power
button cable is properly connected to the
system board.
3. 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.
4. Replace the AC adapter.
ENWW Interpreting POST diagnostic front panel LEDs 167
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