I am not sure if anyone can explain this but I upped the voltage on my memory (see rig in sig) to 2.0v and I set it to run at 1066Mhz with timings of 5-5-5-15. It boots fine, and windows is stable but the Seagate 500GB HDD I have attached to the Gigabyte RAID controller (i.e. Purple SATA connectors) doesn't post. Is there something I am overlooking?