Hi guys/girls Just reassembled my pc with my new hardware: ASUS P8P67 Deluxe Intel I5-2500K Kingston 2x4GB KHX1600C9D3T1/8GX Booting up the pc went smoothly until I got to the "windows is loading" screen. Directly after this screen I see a bsod (i assume) for under a second and the pc restarts. Tried running the repair without luck, reloaded a restore point but didnt change anything. It still does the same thing when booting in safe mode so cant get in at all. I then put another system together from old parts and connected the same hdd and it booted up flawlessly. I was at this point under the assumption that I had made a mistake assembling my new rig. Then took another HDD connected it to the new rig and installed windows on that one (still connected to new hardware). Windows installed and booted up on this harddisk flawlessly. Now I am really confused. How come the hardware works on this harddisk but not my main one when that same harddisk works on another system with different hardware? I am not interested in running windows from the disk I test installed it on (as it sucks) and really want to avoid reinstalling windows on the main drive if at all possible. Any suggestions are highly appreciated.