I have a Gateway FX4710-UB003A. When I first started it, the computer worked perfectly. Extremely fast and not many problems. I am running a 64-Bit Vista OS. Recently, I got a virus and I decided to clean out my entire hard drive. The computer came with an Operating System Disc. On the disk it says "WARNING: This process erases all data and files from the hard drive." It told me that I should put in the CD, restart my computer, and follow the directions. I did as it was told. My computer comes with a 640 gb hard drive with 580 gb of usable space. I wanted everything to be deleted. From the looks of it, everything was deleted but the problem is it says that my computer only has 450 gb of hard drive space. That was how much i had before I inserted the CD. Did I do something wrong? If 130 gb are being used, then how come none of the programs are there? I don't know what I should do. I want all 580 gb of hard drive space back but don't know how to do it. Please help me out. Thanks.