ok i had windows xp home install on my computer but then i decided to install pro. so i switched hard drives before installing pro. i tried multiple times and kept having failures, so i swiched back to my original hard drive. it still doesn't want to install on old drive. i tried about 5 different cds. then i switched cd rom drives. still don't work i turned off bios shadowing/cacheing. it partions fine no problem. copying files i get some errors like failed so i retry and then it goes.... I get through that then it boots up to device installation. sometimes it gives me errors and it completely stops. sometimes i try different disks it works farther, but gives me errors farther on.
what else can i try?