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Locate the Service Tag or Express Service Code of
your Dell computer
Your Dell computer is uniquely identified with a Service Tag or Express Service Code. To view relevant support resources for
your Dell computer, we recommend entering the Service Tag or Express Service Code at www.dell.com/support.
For more information about how to find the Service Tag for your computer, see
SupportAssist diagnostics
About this task
The SupportAssist diagnostics (previously known as ePSA diagnostics) performs a complete check of your hardware. The
SupportAssist diagnostics is embedded in the BIOS and is launched by it internally. The SupportAssist diagnostics provides a set
of options for particular devices or device groups. It allows you to:
● Run tests automatically or in an interactive mode.
● Repeat tests
● Display or save test results
● Run thorough tests to introduce additional test options and provide extra information about the failed device(s)
● View status messages that indicate if the tests are completed successfully
● View error messages that indicate if problems were encountered during the test
NOTE:
Some tests are meant for specific devices and require user interaction. Ensure that you are present in front of the
computer when the diagnostic tests are performed.
For more information, see
SupportAssist Pre-Boot System Performance
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 41. LED codes
Diagnostic light codes
1,1
1,2
2,1
2,2
2,3
2,4
2,5
Check.
Problem description
TPM detection failure
Unrecoverable SPI flash failure
CPU failure
Motherboard, covers BIOS corruption or ROM error
No Memory/RAM detected
Memory/RAM failure
Invalid memory installed
Troubleshooting
Locate the Service Tag on your
Troubleshooting
10
computer.
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