Hello everybody. I'm complettly new in this subject and today I have tried to change my Radeon M6990 into FirePro M8900 but without success. Everything looked fine untill the drvier instalation that was impossible to recognize by the system (Windows 7 64bit). I have download the drvier directly from AMD site so I think that it should be correct. The second problem is that I have in my Alienware 2 Radeon cards with CrossFire and the VBIOS have changed only on one of them (at least that what GPU-Z say). I it posiible to change VBIOS on two GPU? Is for this any other command? Unfortunately I have to do this modification cause one of the software, I need, don't want to start because of the problem with OpenGL.