So I have an asus h81m-c and has 4 sata ports and my problem is that sata 3 and 4 are not working only 1 and 2 my gpu is hiding the sata 3 underneath so I have only access to sata 4 and I just want to plug my dvd drive to sata 4 cause 1 and 2 are being used to hdds but simply when I plug something to sata 4 it doesn't work nor an hdd or a dvd drive but when I boot to bios it can see the sata 4 that I have plugged in something to it but when I boot to windows I cant see the dvd drive or an hdd that I have put to sata 4 even tried to reset bios still doesnt work any help please.