The most common reason is that the BIOS is set to boot from the wrong device, like an empty USB drive. Additionally, this issue can also be caused due to damaged boot files, broken hard drives, or a loose connection between the drive and the motherboard.
1. Change Boot Mode
Changing the boot mode ensures your computer uses the right settings for your operating system and storage device. Most systems use UEFI or Legacy modes. Choosing the wrong mode can prevent drive detection. By matching the boot mode to your setup, you can resolve compatibility issues, allowing your computer to start correctly.
2. Reset CMOS
Resetting the CMOS gives your computer’s BIOS a fresh start, clearing any settings that might stop it from finding bootable devices. This action returns the BIOS to its original settings, fixing issues that could block the boot process.
3. Perform a Clean Install
If nothing else works, a clean install might help. It erases your system and reinstalls the operating system, removing corrupted files and wrong settings. Though it deletes your data, it usually fixes major issues, leaving your computer with a stable OS. For details on how to clean install Windows check our article here.






