I’m trying to upgrade my computer with a copy of win Vista ultimate upgrade. I have a home built computer running Win Xp Professional sp 2, over 2gb of ram, a 2.4ghz intell pIV processor. I checked to see if I can upgrade, and I can, with the exception of some software such as musicmatch. When the upgrade is almost finished my computer reboots and has a message that it couldn’t upgrade and that it is returning to Win XP. Any suggestions would be appreciated. Thank you.