Well guys, i didnt manage to find any help allready posted for my problem. I have Asrock 990FX Extreme3 mainboard. With a help of Serg008 (thx serg) I downloaded modified bios from this page http://forums.mydigitallife.net/thr...uests/page3962?p=653177&viewfull=1#post653177. I successfuly install new bios on my mainboard. Now, I downloaded X17-24395.iso Windows 7 Ultimate x64 English from link on this page: http://forums.mydigitallife.net/thr...amp-X64/page60?p=470600&viewfull=1#post470600 I install it on my disk without entering the key and uncheckd option "activate when on line" (anyway the PC was disconected from network). Now i transfer certificate asus21.xrm-ms on c: , then I elevate command console and I run it as administrator. Then i typed: slmgr.vbs c:\asus21.xrm-ms but i get invalid combination of command parameters and bunch (3 pages) of commands. Is there any solution for this, plase help or advise.