At the Windows startup screen, press and hold the power button for 10 seconds to turn off the computer.
Press and hold the power button for 10 seconds to turn off the computer.Boot into safe mode with networking in Windows 11, Windows 10, Windows 8 or 8.1 Before you enter safe mode, you need to enter the Windows Recovery Environment (WinRE). Safe mode starts Windows in a basic state, using a limited set of files and drivers, and allows you to perform troubleshooting steps. If you've already run the Quick Test and the issue wasn't solved, we recommend running this test next. This comprehensive test takes a more in-depth look at your hardware to find problems that are not easy to identify. Or, click Browse all products and manually select your Dell computer from the catalog.Or, enter the Service Tag or Express Service Code of the Dell computer and click Search.Follow the on-screen instructions to install Dell SupportAssist. Click Download & Install SupportAssist to auto-detect your Dell computer.
If the computer can boot into Windows and can access the internet, run the Dell online diagnostics: Look up the preboot diagnostic error code. If the test fails, make a note of the Service Tag, error code, and validation code.The issue is likely related to the operating system or software that is installed on the computer. If the tests pass, the hardware devices in the computer are working correctly.Follow the on-screen instructions to complete the preboot diagnostic test.Turn on the computer and tap the F2 key several times until you see the One Time Boot Menu.If the computer cannot boot into Windows, run the preboot diagnostic test on a Dell computer:
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.
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