Need some help with Windows XP and video folder issues.

Arrghh! For some reason I have been having lock-up issues any time that I try to access the My Videos folder on my comp. Can't say for sure exactly when this started. It may have been after upgrading IE, but not sure. The wierd thing is that my 360 has only been able to view about 10% of my videos over Media Connect and this was only after the latest 360 update. I am running Windows XP Home Ed, SP2 -Version 2002. I have all my data files (picts, games, videos, docs, etc.) on a second hard drive and keep my active programs and Widows on the Main C Drive. I have tried to move various video files out of the My Videos folder and into a temp folder with the same result. I can browse the folders for about 60 seconds, then they lock up and I have to use Ctl-Alt-Del to close IE. I have tried playing with the folder options (going from thumbnails to simple listing, hidden/no hidden files, etc0. with no luck. I really don't want to reformat my main drive, but fear that this may be the only way to fix this issue. If anyone can help, please let me know.