Movie folder Not responding

Hello,

I have Windows XP SP 2 on my PC, I had Vista on but had to down grade to XP for my work. I had files and folder on my PC whick I backed up to an external Hard Drive (Samsung STORY 1.5TB) It was all woking very well, but now my Movie folder opens and you can see the different movies, but can't do anything. The browser don't even want to close, I have to go to Task manager to end task to close the browser. I have run a virus scan, File recovery and repair but no luck. There are no viruses on that Folder. All the other files on there is working correctly, except for that one. If I connect it to the Labtop and go to the windows search then I can open the folder and I can access the different movies, But I can't go to My Computer an select the External hard drive and then the folder, then it doesn't respond. Please help.