howdy there guys, I was trying to boot windows xp home over xp pro today (the pro was already when i bought it and I dont have the key) Anyway, the hard drive in 2 partitions, I formatted one partition and then tried to install home over the other. It started installing ok but after a while (about half an hour) it got stuck on the boot up screen. I restarted it and it comes up with 2 os but the clock timer is on 0 and I cannot choose to run the original os (pro). Everytime it boots therefore, it is stuck on the windows loading screen. Ideally I would like to wipe everything and start fresh. Can that be done through Bios? Any help would be great, thanks.