house70 :
If the OS was corrupted the only option is reinstall.[/quotemsALL OF MY DRIVES ARE HIDDEN I AM NOT ABLE TO ACCESS ANY OF MY DRIVES WHEN I TRY TO RE INSTALL IT SAYS UR DRIVE IS LOCKED
So you're still having problems. Post details of your PC so we get a more accurate picture. Best not to select an answer as Best Solution until the problem is solved, or you'll get no attention.
It's possible either your drive has failed, or something happened to your BIOS, but until we know your PC model we can't help...