A technician is not able to boot to Windows OS. A "Non-bootable device found" message appears on the screen when the computer restarts. Which of the following is the MOST possible cause of the error message?

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D. A bootable HDD is not recognized in the BIOS. When the BIOS cannot detect the HDD in its device list or boot order, it cannot attempt to load any boot sector or OS, resulting in a 'non-bootable device' or 'no boot device' error. This can occur due to a loose SATA/power cable, a failed drive, or incorrect BIOS boot order settings. Unlike a corrupt MBR or OS, this error manifests before any partition or filesystem is even examined.

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A. MBR is corrupt on the HDD. A corrupt MBR would typically produce a different error such as 'Invalid partition table' or 'Missing operating system,' not a non-bootable device message, because the BIOS would still detect the drive.

Answer

B. HDD is set to Cable Select. Cable Select is a jumper setting for older IDE drives and does not cause a non-bootable device error on modern SATA systems.

Answer

C. The operating system is corrupt. A corrupt OS would be discovered after the BIOS hands off to the boot loader, producing OS-level errors, not a BIOS-level non-bootable device message.

A technician is not able to boot to Windows OS. A "Non-bootable device found" message appears on the screen when the computer restarts. Which of the following is the MOST possible cause of the error…

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