I've been playing with a machine with 2 different GPU's and no internet connection . After testing this 4 OS, I realize they have remove a lot of drivers from the iso in Windows 8.1 and server 2012 R2. Under Windows 8 and server 2012, my 2 GPU got the drivers from the iso during installation. I try the same with the new isos, Windows 8.1 RTM and GA and also in server 2012 R2, and got no drivers. It's just me or this isos seem like they need another year? I know the new Microsoft politic is change OS every year (win 8.1, win 8.2, etc...), but if the cost to their customers is a s**t OS with toons of bugs or missing files because there is not enought time for testing. I think I will only stick to the primary changes (win 8, win 9, win 10).