Windows Explorer Problem

[CIncyHR]

I am having a problem with Windows XP Professional. When I start up my comptuer, the desktop loads up but then I get an error messae saying "Windows Explorer has Encountered a Problem and needs to Shut Down." At this point, whether I click "send" or "Don't Send" the system freezes up. I can still see my desktop, and I can move the cursor, but I can't open any files or programs, or even open the start menu.

Has anybody ever heard of anything like this, or have any advice for me? Ive tried starting in safe mode and tried a system restore and neither of those thnigs worked.

Thanks in advance.