I have just changed my system from a large case to a matx case, but used all the part except the mainboard. Changed from a Asus P6T Deluxe to a Asus Rampage Gene II.
Now I thought I might have to reinstall windows, but as luck would have it, it booted straight into windows with no other problem except I had to register windows.
It was only when I tried plugging in a usb memory stick into the front of the case that I got a bsod. If I plug it into one of the back usb ports it works. So I checked to see if the cable was attached correctly on the internal header and again it was.
So could this be down to windows or a hardware problem?