TroubleshootingEnhanced Pre-Boot System Assessment (ePSA)diagnosticsThe ePSA diagnostics (also known as system diagnostics) performs a complete check of your hardware. The ePSA is embedded with theBIOS and is launched by the BIOS internally. The ePSA diagnostics provides a set of options for particular devices or device groups,enabling 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 testingCAUTION: Use the system diagnostics that comes with your software to test only your computer. Using this program with othercomputers may cause invalid results or error messages.NOTE: Some tests for specific devices require user interaction. Always ensure that you are present at the computer terminalwhen the diagnostic tests are performed.Running the ePSA diagnostics1 Power-on the computer.2 When the computer boots, press the F12 key.3 On the boot menu screen, select the Diagnostics option.The Enhanced Pre-boot System Assessment window is displayed.4 Click the arrow key at the bottom left corner.Diagnostics front page is displayed.5 Press 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.If there are any issues or error codes displayed, note the error code and validation number and contact Dell.Testing memory using ePSA1 Turn on or restart your system.2 Perform the following action after the Dell logo is displayed:• On the keyboard — Press F12.The PreBoot System Assessment (PSA) starts on your system.NOTE: If you wait too long and the operating system logo appears, continue to wait until you see the desktop. Turn offthe laptop and try again.1122 Troubleshooting