Hi all, Sorry if this is a repeat question, i did have a search first. I have an OEM install from an HP shipped XPSP3 disc that didnt preactivate. Ive checked the crc of the installed OEMBIOS.cat against the output of oembios.exe and its incorrect (ive no idea why hp is shipping discs that dont preactivate correctly). I would like to install the correct BIOS files without having to reinstall windows. I have downloaded the correct BIOS files but im not sure how to install them. Do i just need to replace the old files with the new ones? I read that oembios.exe will "install" new BIOS files for you if there is a directory called "HP" in the same folder when you run it, but that didnt seem to work. Thanks for the help.