I am trying to help out a friend, he purchased a Samsung NP355E5C-A01US AMD chipset, that came with Win8 x64. He had someone do a fresh install of Win7 x64 because a piece of software he needed was not compatible with Win8. Windows recognizes everything except for 3.0 Controllers. I have spoke with samsung tech to no end. Because it came with win8 they wont lift a finger.. do these drivers exsist in some dark hole somewhere.. Please help!!