I recently upgraded from Windows XP 32-bit, to Windows 7 64-bit. Everything seemed to go smoothly, but now my DVD-ROM won't work. It won't even show up in my BIOS. My two SATA hard drives work fine, but not the ROM. I upgraded all my drivers, however, under the Device Manager, I still get an alert beside my RAID Controller. Could this be the issue? If so, how do I go about fixing it. I downloaded the drivers for my chipset already.