The hard disk has failed. Try a new HDD and use the restore media you made when you unpacked the laptop long ago. It may come back. Figure about 50 bucks to try.
If that's not possible get estimates.
One week my laptop decided to self-destruct it is a Toshiba Satellite C855, first of all the speakers stopped working, then it got slower, then it started freezing and now anytime it turns on the Toshiba logo appears and it says it's scanning and repairing the drive but it only goes to 11% complete and doesn't go any higher. So anyway is there a way I can fix this?