Temps, both in BIOS and from Windows, what are they?
Maybe download CPUZ and GPUZ.
Alos, try abandoning the drivers that come with the mobo and D/L ones from Asus.
Try these usuals, too: One stick of RAM at a time. Run some stress tests like OCCT or Prime95. Run memtest86. Run PCMark or Sandra. These can help pinpoint the specific area that's hanging up.