▶ Computer's boot hard disk MBR sector is damaged. Fixing these disk errors can restore the functionality of the operating system and resolve the "No bootable device" problem. By running the "chkdsk" (Check Disk) command in the Windows Recovery Environment, you can scan the disk for errors and attempt to repair them. This corruption can occur due to sudden power outages, physical damage to the disk, or age-related wear and tear. ▶ Internal hard disk is corrupted due to disk errors/bad sectors.ĭisk errors and bad sectors on the internal hard disk can prevent the operating system from being read or accessed correctly. By setting the system partition as active using the "diskpart" command in the Windows Recovery Environment, you can instruct the computer where to look for the boot files, resolving the issue. If this partition is not set as active, the computer won't know where to find the necessary boot files, leading to the "No bootable device" error. The system partition is a specific partition on the hard disk that contains the essential files needed to start the operating system. By adjusting the boot order in the BIOS/UEFI settings, you can ensure the computer checks the correct device first and allows the operating system to load properly. If the boot order is incorrect, the computer might be trying to boot from a non-bootable device, such as a USB drive or a CD/DVD, before attempting to boot from the internal hard disk where the operating system is installed. The boot order determines the sequence in which the computer looks for a bootable operating system. This can happen for several reasons, and here are some common causes: When a PC displays the error message "No bootable device," it means that the computer is unable to find a valid operating system to load and start up from the storage device (e.g., hard drive, solid-state drive, or external storage). It means BIOS cannot find or locate the boot device or the boot files on the boot device are incorrect. The “no bootable device found” error is actually reported by BIOS. BIOS is a program in computers used to load the operating system and execute the boot operation. What does it mean by "no bootable device"?Ī bootable device is a kind of storage hardware, such as hard drive, USB flash drive floppy disk drive, DVD, CD-ROM drive, which contains necessary boot files and drivers for loading the operating system.
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