I have been unable to activate Windows ultimate, I have re-installed windows about 4 times but windows without success. My modded Bios has Slic 2.1 I don`t know what the problem is the Dump slic info indicates that Slic status reads `Invalidated` Is it the cause of why windows cannot be activated. ? If it is, how do I validate the Slic ? Please help me, I am stuck.