Probleme cu Windows 7

Defiecare data cand dau click pe My computer sau orice folder....explorer-ul imi da eroare
Windows Explorer has stopped working
Windows can check online for a solution to the problem and try restart the program ....nu au nici-un efect,

Problem signature:
Problem Event Name: APPCRASH
Application Name: explorer.exe
Application Version: 6.1.7600.16450
Application Timestamp: 4aebab8d


exista solutii sau explicatii?