At the top of the forum is a note about laptop cleaning. Not that I can tell if that will help here. The OS, age and model number would be needed to give other ideas such as how to cancel the scan.
My toshiba laptop wants to run a scan disk when it starts up. If I let it go to run, it freezes and sits there. If I try to cancel it, it still freezes and sits there. I don't know what to do! Please help.