In short: Is it possible to change the brand name and OEMBIOS files on an existing installed Windows XP ? Problem: An XP Pro SP3 installed 2 years ago with a CD modded VLK to OEM Hewlet Packard using OEMBIOS tools. Bios modded to HP. Is it possible to change from HP to Gigabyte without reinstalling Windows XP ? SLP1.0 into Bios is HP. (It is for a friend of mine, same Mobo, but Bios is Gigabyte with SLP1.0 , he does not want to flash the bios) So I have just to imaging my Partition and restore to his computer. ? Any advice appreciated.