Computer crashing when transferring files

[Bucken]

Hey guys. I have an external hard drive that I'm using to watch movies with my 360. I formatted with Mac drive. Now when I go to transfer files to it the speed starts decent but just continues to decline as the transfer keeps going. Also right at the end of the transfer my computer crashes. Anyone have any clues as to why this is happening? Thanks.

 

[closers]

Sounds like a bad hard drive. Maybe run a diagnostic on it. Is the external easily removable from its enclosure?

 

[Bucken]

Yeah it is. I will run a diagnostic on it tomorrow. Also about half the time now the movie won't run on the 360 even though it is in a format that it should recognize.