ask,dulu di win 8 tiap install catalyst 13.1 keluar driver unsigned (klo ga slh di atidv bla2bla2 .dll , lupa namanya), pas w klik proceed anyway bluescreen mulu, ga bs direcover, hrs inul mulu w mk a8 4500M (7640G+7470M) leptop version ada recomended versi driver catalyst yg stabil (selain yg dr...