Explorer.exe crashes while opening certain folders

Hello everyone :),

today, I wanted to modify my start orb, so I changed something in explorer.exe. I did back the original up.
When I found that it wasn't really to my liking, I restored the original explorer.exe, and here is were the problems began.

When accessing certain folders, such as my user folder and my external hard drive, explorer.exe just crashes and restarts.

I have included a dump using Debugging Tools for Windows, I hope you can help me! :)

Specs:
Windows 7 - build 7600 (RTM) 16385 - x64.

Bump?

From an elevated command prompt, copy and paste this to it, hit enter. Problem resolved:

sfc /scannow

Win7 doesnt like you customizing things in explorer. My problems with the right click issue and exp crashing began after changing my start up orb to an 8 ball. Ran fine for a few days, then the probs started. I ran the command the above poster recommended and all has been well since. It changes your start orb back to default of course. O well..

Try running DISK cleanup on Partion 1 and clean all tempory internet files