I don't know what's going on. I just got a new WD3200 hard drive. It's working fine. A week later when I click on the drive it's saying "The disk in drive F: is not formatted. Format now?" I've took it out of my computer and replaced it with my other hard drive. Just a few minutes ago I clicked on a documents file and I'm receiving the same message. I can click on other files and not have that happen. On the hard drive which has Windows XP when I delete a file the file is deleted but a message pops up saying "Cannot delete desktop. Data Error (CRC)" Does anybody know what this could be? Why is this all happening at the same time? My brother was looking at my computer a couple of weeks ago and mentioned my power supply wasn't large enough. Does that have to do with my issues. It is a Fortron Source 300W Power Supply.