So my father in law had a crash and i had to replace his motherboard. Now slp string is missing and xp says i have to reactivate. My thought on this is to run decryptoembios.exe and see what string is expected and then inject this in right place with amitool. all to keep him close to original as possible. Decrypting gives me something like Code: [OEMBIOS] BIOS=f000,0000,ffff, FUJITSU BIOS=f000,0000,ffff, SIEMENS BIOS=f000,0000,ffff, PRIMERGY BIOS=e000,0000,ffff, FUJITSU BIOS=e000,0000,ffff, SIEMENS BIOS=e000,0000,ffff, PRIMERGY Makes me think there can be more than one string present. Is this string later related to his product key so i have to match it? or it doesn't mater as long as xp finds one of this strings? Is there more i have to watch out for? or maybe a better way to go?