Hi, I got the same problem as this person in this thread. www.tomshardware.com/forum/53570-63-windows-explorer-stopped-working.
The person said 'Nevermind, the problem had to do with Bitdefender 2013... Check out their forums for the solution, had to download a registry file that fixed up everything'.
Faulting application name: Explorer.EXE, version: 6.1.7601.17567, time stamp: 0x4d672ee4
Faulting module name: SHLWAPI.dll, version: 6.1.7601.17514, time stamp: 0x4ce7c9ab
Exception code: 0xc0000005
Fault offset: 0x000000000000ae81
Faulting process id: 0x1710
Faulting application start time: 0x01cdd32d09f6f198
Faulting application path: C:\Windows\Explorer.EXE
Faulting module path: C:\Windows\system32\SHLWAPI.dll
Report Id: dd5f7aab-3f20-11e2-a768-0024bec35e21