I had to reformat my computer a number of times when I toyed around with trying having a Dual OS with Ubuntu linux. Anyways after reformating 3-4 times I decided to just go windows. When I reinstalled windows however some of the files on my second harddrive that did not get reformatted or anything had some errors in it: Mp3s that wouldn't play, .iso files that wouldn't work, etc. Can anyone give me some incite as to what might have happened and also how to fix it possibly. Thanks.