![]() Running hardware diagnostic test using Dell SupportAssistÄell offers both integrated and online diagnostics. Running Dell SupportAssist Preboot System Assessment or enhanced Preboot System Assessment (Dell PSA or ePSA) If the computer can boot into Windows and has an active Internet connection, run a quick test on the Dell computer using Dell SupportAssist.When the Dell logo appears, press the F12 key to enter the One-time Boot Menu.Use the arrow keys to select Diagnostics and press the Enter key. ![]() Follow the on-screen prompts and respond appropriately to complete the diagnostics.If the test passes, go to the next step.If the test fails, ensure to write down the error code and validation code, and contact Dell Technical Support. Malware (viruses, spyware, trojans, and so on) can cause the computer to stop working or perform slowly.
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