To continue, computer won't do anything worthwhile if all four dimms are in. If I run mem-test with only slots 1 and 2 installed, everything is fine, will boot to windows, but the system isn't stable.
Switched out the ram that was in slots 3 & 4, run memtest, no errors. Same with boot and stability. Put ram in slots 3 &4, and immediately get memtest errors, and system won't even load the OS.
Additionally, can't get windows to load the raid drivers, no matter how I un-install and re-install them. UsB hangs, graphic drivers crash no matter how i un-install, driver clean, and update them.
It certainly -seems- like something has gone awry with the mobo.