50 Advanced Troubleshooting
During normal operation, all of the diagnostic
lights turn on and then turn off before the
system starts.
If all four diagnostic lights stay on and the
power button remains amber, a possible
processor power or connection error has
occurred.
NOTE: If all of the diagnostic lights turn on then
off and the system does not start, there may be a
problem with the power supply or with the
processor. For other possible solutions, see
"Power Problems" in your Owner's Manual.
If the system does not start, plug the
computer into a working electrical outlet. Also
see "Power Problems" in your Owner’s Manual.
Unplug the power supply and check the 4-pin
processor power cable connection (see
"System Board Components" on page 65).
If there are no power problems and the system
does not start, contact Dell for technical
assistance.
Light Pattern Problem Description Suggested Resolution
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