I have never encountered a thing like this, so I don't know the reason nor the proper answer to what you should do.
However, if it get worse, or you have tried everything, I might recommend you reinstall the operational system. I hope you have some kind of backup, because a move like that will delete everything on your harddrive. Make it a last resort move, and only if it is totally necessary, depending on if you can't make a backup of the files on your computer.