A computer contains several internal hard drives,a DVD-ROM,and an external hard drive.After you upgrade the BIOS,the computer refuses to boot.The error message "operating system not found" appears.Which of the following should you check first?
A)Internal hard drive connections
B)The boot sequence in the BIOS
C)The power supply voltage switch
D)The motherboard battery

Question

Quizplus · Accepted Answer

The error message "operating system not found" usually indicates that the computer cannot locate the operating system files. This can be caused by a misconfigured boot sequence in the BIOS. Checking the boot sequence and making sure the internal hard drives are set as the first boot device can help resolve this issue. Checking the internal hard drive connections and the motherboard battery may also be necessary, but checking the boot sequence in the BIOS should be the first step. The power supply voltage switch is not relevant to this issue.

A Computer Contains Several Internal Hard Drives,a DVD-ROM,and an External