I just installed part of a new system using some of the old bits. New Motherboard, Ram, CPU cooler and PSU. using old everything else. It booted first time with no problems, evrything was working OK, or so i thought. So... Installing windows and all seemed to be going fine then on the first restart after loading windows components it freezes!! Now i cant even get into the bios without it freezing, sometomes straight away but others it takes a couple of minutes. Could this be a problem with the new hardware? Or operating system (the 1/2 that it managed to install)? Any ideas would be apreciated..

cheers