Hi all. Well, I've got a problem. I have Windows 7 Ultimate OEM 7600 64 bits version, but I can't activate it. I've used Orbit30's and Hazard's activators, but when I reboot my computer, it doesn't iniciate W7. It stays black, like I haven't an O.S. installed. I had to format my PC several times (goes 7 now), because I tried different ways of activation and activators, but always the same: No activation, no windows 7 and needed to format again and install everything (W7, programs..) Any Ideas/solutions?