I've been having an issue where the machine looks locked up- no graphics and/or respolution mismatch errors. At least in my case, when the machine go though the boot process, Windows loads, and those drivers work swimmingly. A also had issues earlier with display, etc., (search my name) and the problem (after 4 weeks, several mobo and APU replacements...) was finally found to be an HDMI problem. None of my standard cables would work right. But my 25 foot monoprice super ultra mega quality cable worked like a charm- presumably the bandwidth was just inadequate with my other generic cables. Just a shot in the dark.
