hey i remember using this MICROSOFT bug cleaner and its still operational.
i use it every time I THINK I GOT A BUG IT HELPS... GO TO MICROSOFT OR MAYBE GOOGLE AND TYPE MSRT.exe (MALICIOUS software REMOVAL TOOL 64-BIT, CLICK IT,check the bottom to click,next it will give you 3 choices,QUICK SCAN,FULL SCAN(TAKES 2HRS or so),or a detailed one where U look at certain files. ITS A MAJOR BUTT SAVER..pls try