|You say you have Windows 7 but you are on the XP forum. Which is it?|
Download and run the "EXE fix" from whichever of these applies:-
It might have been caused by a virus, so I would also download, install and run MalwareBytes freebie as this often finds and fixes nasties that AV's miss.
Note that all block capitals on the internet means you are shouting.
Always pop back and let us know the outcome - thanks