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If your computer shows a “Boot device not found” message, it usually means there’s an issue with the disk or the operating system’s startup process. Here’s a step-by-step guide to help you fix this problem.
First, restart your computer and press the ESC key right after you turn it on. Keep pressing it once a second until you see the startup menu. From there, press F2 to run diagnostics. Make sure the memory and disk drive tests pass successfully. If a component fails during the test, you can check your warranty status online by visiting the appropriate support page. Additionally, you can look up any error codes you receive during diagnostics to understand the problem better.
Sometimes, the BIOS settings might be the cause. Enter the BIOS setup by pressing F10 or F2 during startup (the key may vary). Once in the BIOS, press F9 to load default settings. Make sure that secure boot is enabled and that the date and time are correct. If there’s a boot option for UEFI, select UEFI as the boot mode. After making these changes, save the settings and exit.
If the computer still doesn’t boot properly, perform a hard reset. To do this, hold down the power button for about 20 seconds until the computer turns off completely. Then press the power button again to turn it on.
If the disk passes diagnostics but your computer still won’t boot, you might be able to recover your files. Let me know if you need help with that.
Hopefully, these steps will resolve your boot issue. If not, you may want to seek professional help or contact support for further assistance.