Whenever i tried to transfer big files from the os to my ext hard disc, it will just hang half way and will prompt me that the driver is not detectable. Then afterward the window will just hang. I get that freq and i am wishing someone will help to solve this issue as i am quite unhappy with the new window though stated that is better than vista. It just another problem after problem. I guess many users are getting tired of complaining issue and just stick back to window xp or go to osx. i guess if there is still any of the issue that keep occuring, i will just switch to mac instead. no point wasting my time to solve the problem.