I'm having a problem with Windows Explorer constantly crashing regardless of whether I start in normal mode or safe mode. I don't even get a chance to do anything in either mode, as in 5 seconds Windows Explorer will crash and if I try to run a program it will crash and the Show Details window shows Problem Event Name: APPCRASH and Application Name: Explorer.exe. I suppose this might not be detailed enough but I just can't stay on long enough to do anything. Also, the screen in Safe mode flickers alot in addition to the crashing. I had my hard drive for about 3 years, could it be dying? I'm pretty sure I don't have a virus since I have Kaspersky Internet Security 2009 and did a scan recently.
I also tried using the Windows installation DVD and ran Windows Memory Diagnostic Tool which found no problems, then I ran Startup Repair which found no problems, but when I ran System Restore I got, "System Restore failed due to an unspecified error. Cannot create a file when that file already exists", several times and when I finally got a restore point that worked that didn't fix anything.
I also tried using the Windows installation DVD and ran Windows Memory Diagnostic Tool which found no problems, then I ran Startup Repair which found no problems, but when I ran System Restore I got, "System Restore failed due to an unspecified error. Cannot create a file when that file already exists", several times and when I finally got a restore point that worked that didn't fix anything.