I have a computer I built and use as a server. I am in the middle of upgrading the MB/CPU /OS. It is an I7 processor in an Asus Rampage 3 formula mainboard. I have Win 7 64 installed but when the raid card is installed and drives attached the system hangs intermittently for several seconds at a time with no obvious reason. The system does not hang up any when the card is installed without drives attached. Anyone have any suggestions as to what may be causing this, or how it can be fixed? Thanks.