i have purchase the Ga-P55a-UD6 and a Ga-P67A-UD7-B3 one year ago. Its working fine till last month. I have purchased the new Marvell 88SE9128 SATA controllers and installed it on my system. But I canít detect the hard disk on my system. The actual problem is when I try to plug the Seagate 2TB hdd to my Marvell 88SE9128 SATA controllers which is installed on my motherboard then it will neither identify or communicate with the HDD. But when I am try this on other non Marvell SATA controllers then its work fine. I cant understand the problem. I am the user of Windows 7 ultimate edition. I try that in both IDE and AHCI mode. But nothing work for me. I discovered that Ga-P55a-UD6 is work fine but the Ga-P67A-UD7-B3 cant communicate. Can anyone help me out to solve your problem ?please help e out.