Hello. I have acquired an used Asus netbook with Windows 7 Home Premium, but the key on the Certificate of Authenticity is partially unreadable. I can clearly see the last 3 blocks and the last 2 characters of the 2nd block, but everything else is unreadable. I can see them a little, but not clearly. I have tried running various combinations of keys through the Ultimate PID checker, but haven't got anything valid. So, is there any software that can try to recover a partial product key if a pkeyconfig is provided? Theoretically, brute-forcing combinations should be possible, but I don't have the time to do it manually.