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Question:

Which of the following failure would lead to a No Operating System?

A Hard disk failure
Explaination

When RAM fails, the computer normally does not start at all or displays a BIOS error before attempting to boot an operating system. The computer can only search for the OS boot setup after passing the RAM test. The No Operating System fault would be shown if the hard disk was not running correctly or was not installed in BIOS in the right order.