Have a DELL M6600 with AMD Firepro 8900 GPU . Adrenalin and Crimson drivers DO NOT WORK. "NO AMD GPU INSTALLED" error when tried. Default windows driver identifies GPU as Radeon M6900. What driver do I use to have Eyefinity multi monitor support?
First of all...we have to assume you have Windows10. Is that correct? Or do you have the original Win7?
Are these the AMD drivers you are trying to install...after your update the Intel graphics?