Owners Manual

Troubleshooting your computer

You can troubleshoot your computer using indicators like diagnostic lights, beep codes, and error messages during the operation of the

computer.

Enhanced Pre-Boot System Assessment — ePSA

diagnostics

The ePSA diagnostics (also known as system diagnostics) performs a complete check of your hardware. The ePSA is embedded with the

BIOS and is launched by the BIOS internally. The embedded system diagnostics provides a set of options for particular devices or device

groups allowing 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 to provide extra information about the failed device(s)

• View status messages that inform you if tests are completed successfully

• View error messages that inform you of problems encountered during testing

CAUTION

: Use the system diagnostics to test only your computer. Using this program with other computers may cause invalid

results or error messages.

NOTE: Some tests for specic devices require user interaction. Always ensure that you are present at the computer terminal

when the diagnostic tests are performed.

Running the ePSA Diagnostics

Invoke diagnostics boot by either of the methods that are suggested below:

1 Power on the computer.

2 As the computer boots, press the F12 key when the Dell logo is displayed.

3 In the boot menu screen, use Up/Down arrow key to select the Diagnostics option and then press Enter.

NOTE

: The Enhanced Pre-boot System Assessment window displays, listing all devices detected in the computer. The

diagnostics starts running the tests on all the detected devices.

4 Press the arrow in the lower-right corner to go to the page listing.

The detected items are listed and tested.

5 To run a diagnostic test on a specic device, press Esc and click Yes to stop the diagnostic test.

6 Select the device from the left pane and click Run Tests.

7 If there are any issues, error codes are displayed.

Note the error code and contact Dell.

8 Shut down the computer.

9 Press and hold the Fn key, while pressing the power button, and then release both.

10 Repeat steps 3–7 above.

Troubleshooting your computer 89