I would strongly recommend you reformat your drive and make sure you erase the partition , Something on your system made your operating system files go corrupt. If you don’t start fresh you take a chance of that problem still being on your drive. Potentially leaving it to happen again. I would even take it as far as taking that drive out and running a program called KillDisk on it from another computer and letting the windows CD create an all new partition on the drive. KillDisk is free to download just google it. Let me guess it’s a Dell , There infamies for that ……………