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System does not power on and the LEDs on the front of the computer are not flashing.
Cause
System unable to power on.
86
Appendix F Troubleshooting Without Diagnostics
Solution
Press and hold the power button for less than 4 seconds. If
the hard drive LED turns green, then:
1.
If equipped with a voltage selector, check that the
voltage selector (located on the rear of the power
supply) is set to the appropriate voltage. Proper voltage
setting depends on your region.
2.
Remove the expansion cards one at a time until the
5V_aux light on the system board turns on.
3.
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.
Open the access panel and check that the power button
cable is properly connected to the system board.
3.
Check that the power supply cables are properly
connected to the system board.
4.
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 assembly.
5.
If the 5V_aux light on the system board is off, then
replace the power supply.
6.
Replace the system board.
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