Hi there,

I know it is a real old post but I experienced the same issue and fixed it with a slight different workaround. In order to install win7 64bits on my Asus M2A-VM motherboard (quite old now) using 1 128Gb SSD and 2 WD HDD's (2Tb each) I had to:

1. Fix my BIOS settings (raid mode, select the good array to boot)
2. Setup the SSD as a single array
3. Make sure that the SSD is a MBR table (not GPT)
4. Download the Win XP raid ahci controller (V25154039) driver
5. Start the original Win 7 64bits DVD (I insist because the 32/64 mods did not work)
6. Load the driver contained in the WINXP1 folder
7. Install Win 7 on my SSD

I hope it will help people (I spent hours on this...)