Activity Beeps Possible Cause Recommended Action
Red Power LED flashes eight
times, once every second,
followed by a two second
pause. Beeps stop after fifth
iteration but LEDs continue
until problem is solved.
8 Invalid ROM based on
bad checksum.
1. Reflash the system ROM with the latest
BIOS image.
2. Replace the system board.
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.
9 System powers on but is
unable to boot.
1. Replace the processor.
2. Replace the system board.
Power LED flashes 12 times,
once every second, followed
by a two second pause.
Beeps stop after third iteration
and the computer reboots.
12 Health timer expired. None.
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 green, the
power button is working correctly. 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
green then:
1. Check that the unit is plugged into a
working AC outlet.
2. Ensure that the DC power cable is plugged
into the I/O panel.
3. Replace the power supply.
98 Appendix E POST error messages
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