How can I do a repair install for an XP Home Computer retail upgrade install with SP3 installed? I have CDs for the original XP Home retail with SP1, XP Home OEM with SP2, and XP Pro OEM with SP3. This is a computer used for nothing but games and web surfing so I may be better off just wiping the hard drive and reinstalling from scratch, but thought I would check on the collective wisdom of this group. As it sits now it blue screens frequently even when just sitting there doing nothing. It is a P4 3.0 with 2gb ram and an 80gb hard drive with lots of space. My understanding is that it is impossible to do a repair install with a lesser edition, ie. and SP3 system with an SP1 original disk. I have not tried anything with this computer, but I have seen this problem a while back when trying to do a repair install on an XP Pro system. I've been putting this fix off for a while, but with summer here and the grandkids here more often I need to get this fixed.