Every time I start my laptop it gets past the welcome screen and then goes black and a window appears stating that Windows Explorer has stopped working. I use task manager to get to Run. I attempt to start explorer.exe but the task manager crashes as well. The same thing happens in Safe Mode and i can't get to MSCONFIG to run a clean boot. Problem details sate: Problem event name APPCRASH Application Name Explorer.EXE Application Version 6.1.7600.1678 Fault Module Name PROPSYS.dll Fault Module Version 7.0.7600.16385 .... I am running Windows 7 Ultimate 32-bit. Any help or advice is much appreciated, thank you.