I am having an extremely frustrating problem. I recieved a desktop from a customer yesterday to work on. I booted it up and it came up fine. This morning i took the drive out to back it up on one of my other machines and even though it recognized the drive, it didnt show it as having any file format. When i tried to explore the drive it asked me to format it. I know the drive works cause i just booted it yesterday. Could this be a jumper issue? I suspected the drive to have a virus yesterday but i didnt think that it would suddenly render the drive unusable. Please help if u can, i am very frustrated with this problem.