Article ID : S500006868 / Last Modified : 11/04/2018

Immediately after turning on your PC, a siren-like sound comes out.

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Immediately after turning on the PC, a sound like a siren comes out from the hard disk drive. (The sound varies depending on the person who hears it.) After the siren, you may receive the message, "Operating System Not Found".

You may hear a sound like a siren immediately after turning on your PC (the sound varies depending on the person who hears it). The sound comes from the hard disk. A hard disk drive consumes a large amount of power momentary when it starts working, and it makes such a sound. You can continue using the computer.