I have an external hard drive. I can transfer small files onto it fine, but if I try to transfer a larger file it just freezes on the screen where it counts down the time left to transfer and won't count down any more. I have formated it and converted it back and forth from Fat to NTFS. It is in NTFS and still does the same... I have been able to transfer large files over in, but in the last few days it hasn't let me. It is a Seagate Free Agent Go Flex 1TB. Maybe 3 weeks old. Any ideas?