I have an asus p8z77-v lk mobo that i recently built a system with. I have not had any problems until today my computer is stuck at the starting windows screen. I have windows installed on an OCZ vertex 4 SSD. When i put the SSD on a sata II port it boots perfectly fine. But if i have it on a sata III port like i have had for the last 2 months it gets stuck on starting windows.