I'm trying to install win7 64 on a new puter and it is asking for some kind of driver up front. Gives no indication of what its for or where to get it. I've tried the motherboard (MSI) vista and XP driver CDs with no success. new system is AMD Phenom x3, MSI k9A2 CF board, nvidia250, I have two drives I've been using in raid 0 but even taking off the raid setup, win7 still wants some mystery driver. help!