Troubleshooting
System diagnostic lights
Power-supply diagnostics light
Indicates the power-supply state.
Hard-drive activity light
Turns on when the computer reads from or writes to the hard drive.
Table 5. LED codes
Diagnostic light codes Problem description
1,2 Unrecoverable SPI flash failure
2,1 CPU failure
2,2 System board failure, corrupt BIOS, ROM error
2,3 No memory/RAM detected
2,4 Memory/RAM failure
2,5 Invalid Memory installed
2,6 System board error, chipset error, clock failure, gate A20 failure, super I/O failure,
keyboard controller failure
3,1 CMOS battery failure
3,2 PCIe or video card/chip failure
3,3 Recovery Image not found
3,4 Recovery Image found but invalid
3,5 Power Rail Failure
3,6 Paid SPI volume error
3,7 Intel ME (Management Engine) error
4,2 CPU power cable connection issue
Diagnostic error messages
Table 6. Diagnostic error messages
Error messages Description
AUXILIARY DEVICE FAILURE
The touchpad or external mouse may be faulty. For an external
mouse, check the cable connection. Enable the Pointing Device
option in the System Setup program.
BAD COMMAND OR FILE NAME
Ensure that you have spelled the command correctly, put spaces in
the proper place, and used the correct path name.
CACHE DISABLED DUE TO FAILURE
The primary cache internal to the microprocessor has failed.
Contact Dell
4
68 Troubleshooting
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