i have told the bios in this old HP to startup using the cdrom, then the floppy. when i bootup with windows xp cd it looks lik eit checks it, but the setup screen for xp doesnt come up. i have also tried booting with the windows startup disk, but that doesnt seem to be working either. it just loads xp and goes straight to desktop. i need to really format this pc as it needs it desperately...any ideas what i need to do?