Hi, Having just upgraded my mother board (see my specs) I went to restart and was preparing to do a clean install of vista and was told by my pc (HP) that it couldn't reboot and I should contact HP custermer service with the message of code Purple (I have a hard drive particion with vista on it rarther than the vista disc's). After doing some research on this I found that the big brands (HP,Dell) tattoo there mother boards to the hard drives or visa versa. I am in a heated email debate with HP on this as I feel that if you pay for something like a pc with vista on it you should be able to upgrade when you like, without having to buy another OS system. I was quite fond of vista, but am now using good old XP. I am wondering if anyone has encouted this and found a way round it? or do I need to buy another vista There seems to be a mass of conflicting idea on how to fix this. I would be grateful for any response.