I was having so much trouble with Vista upgrade that I had to wipe the drive and go back to xp. I think it was due to the fact that I upgraded an old install of xp that had a lot of its own built in problems. Friday things stopped working, it wouldn't read flash drives and lots of little stuff. It wanted to install drivers that it couldn't find for equipment I'm not sure I had on my machine so Sat. morning I returned. I think it is a good system for those that buy machines with it on them, but not sure I'd suggest the upgrade version. Microsoft was no help, they ignored snailmail and blocked me from getting email help saying my install had expired. The wife has new rig and son has two and all three units do vista nicely.