How far does it get before it reboots? And did you ever get to the Windows desktop at any point, like before you installed any drivers?
I only got into windows after the initial install and I installed ethernet drivers and restarted. After the restart it would just loop, only posts the asrock logo then the blinking underscore and restarts and repeats.
HDD's can have firmware updates, but it's unlikely any have been released for them. Did you try them on the SATA 2 or SATA 3 ports?