I bought a mini HP laptop at Best Buy in December for $400. It fried within a month, so they let me swap it for a new one. Two or three days later, the new one contracted a virus. Best Buy said their warranty does not cover that and that they want $200 to remove it. I have stored nothing on that computer. Can I just wipe the hard drive clean myself, "reformat it" (which I don't know how to do), and then reinstall the, "Microsoft Windows XP Home Edition for Ultra Low Cost PSs SP3" from the CD ROM bearing that name that came with it? BTW, the mini HP doesn't have a CD drive, but I have another laptop that does.