4. Click the arrow at the bottom left corner.
Diagnostics front page is displayed.
5. Click the arrow in the lower-right corner to go to the page listing.
The items detected are listed.
6. To run a diagnostic test on a specific device, press Esc and click Yes to stop the diagnostic test.
7. Select the device from the left pane and click Run Tests.
8. If there are any issues, error codes are displayed.
Note the error code and validation number and contact Dell.
Diagnostic power LED codes
Table 24. Diagnostic power LED codes
Power LED light status Possible cause Troubleshooting steps
Off The computer is either turned
off or is not receiving power
or in Hibernation mode.
● Re-seat the power cable
in the power connector on
the back of the computer
and the electrical outlet.
● If the computer is plugged
into a power strip,
ensure that the power
strip is plugged into an
electrical outlet and is
turned on. Also, bypass
power protection devices,
power strips, and power
extension cables to verify
that the computer turns
on properly.
● Ensure the electrical outlet
is working by testing it
with another device, such
as a lamp.
Steady/blinking amber Computer fails to complete
POST or processor failure.
● Remove and reinstall any
cards.
● Remove and reinstall
the graphics card, if
applicable.
● Ensure the power cable is
connected to the system
board and processor.
Blinking white light Computer is in sleep mode.
● Press the power button to
bring the computer out of
the sleep mode.
● Ensure all power cables
are securely connected to
the system board.
● Ensure the main power
cable and front panel
cable are connected to the
system board.
Steady white The computer is fully
functional and in the On state.
If the computer is not
responding, do the following:
● Ensure the display is
connected and turned on.
● If the display is connected
and turned on, listen for a
beep code.
52 Troubleshooting your computer
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