I'm experiencing a big problem with my External HDD. Whenever I try to transfer big files to it (such as movies etc) I keep getting the following error message (shown in the screenshot below). It also causes my PC to freeze up until I actually unplug the HDD from the PC. I've tried formatting the HDD and that hasn't worked. I'm unsure what to do now to be honest, it just seems to not want to work whatsoever.
It's a Western Digital 465gb 'My Passport' Hard Drive.
Screenshot - http://i48.tinypic.com/a10c4k.jpg
I'd appreciate some help with this, thanks!