External Hard Drive Help Required

[RoyCropper]

Got a boy at work to put film and music onto my external hard drive, however when i plug it in, the file are displayed but as soon as i open the folder, after around a minute it just freezes and then comes up with error message and asks if i wish to send an error report. Then it just doesnt respond.

 

Anyone know what this is?

 

Any help much appreciated!

 

thanks