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Latitude 5421 Service Manual

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Dell SupportAssist Pre-boot System Performance Check diagnostics

About this task

SupportAssist diagnostics (also known as system diagnostics) performs a complete check of your hardware. The Dell SupportAssist Pre-boot System Performance Check diagnostics is embedded within the BIOS and launched by the BIOS internally. The embedded system diagnostics provides options for particular devices or device groups allowing you to:
  • Run tests automatically or in an interactive mode.
  • Repeat the tests.
  • Display or save test results.
  • Run thorough tests to add more options and obtain details about any failed devices.
  • View status messages that inform you when the tests are completed successfully.
  • View error messages that inform you of problems encountered during testing.
NOTE:Some tests for specific devices require user interaction. Always ensure that you are present at the computer when the diagnostic tests are performed.

For more information, see the knowledge base article 000181163.

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