If the test passes, go to the next step.Follow the on-screen prompts and respond appropriately to complete the diagnostics.Use the arrow keys to select Diagnostics and press the Enter key.When the Dell logo appears, press the F12 key to enter the One-time Boot Menu.Running Dell SupportAssist Pre-boot System Assessment or enhanced Pre-boot System Assessment (Dell PSA or ePSA) If the computer can boot into Windows and has an active Internet connection, run a USB test on the Dell computer using Dell SupportAssist. Running a hardware diagnostic test using Dell SupportAssist Dell offers both integrated and online diagnostics.
To determine if your Dell computer is experiencing a hardware problem, it is recommended that you first run a hardware diagnostic test. Running a hardware diagnostic test can help you identify hardware-related problems and provide you with troubleshooting steps to help resolve the issue.
