my computer was preloaded with vista 64 bit. im tryin to install xp but i cant format hd and xp wont boot from disc, keep getting error. i was told to change bios from sata to ide, but i think i dont have the option to cause i dont c it in bios options. someone else told me to use a dos boot disc, but the one i dl and burned as an image doesnt recognize c:\, my harddrive. i was going to use easeus, but it doesnt work on 64 bit. someone please help me. im trying to flash my xbox 360 and i cant do it on 64bit.