So I recently installed my new xfx hd 5670 into my PC, and when I did I got no signal. I ruled out the obvious solutions such as faulty monitor/video card, video card and/or ram not seated properly. I think it might be my PSU. I say that because after I installed the new video card, the otherwise unrelated CD/DVD drive stopped working also. My graphics card requires 400w and I'm running a cheap 450w .I checked out graphics card video to know which would be the best.I'm not a computer expert, but I do know my fair share please try to make it easy for me to understand.
any sort of feedback would be greatly appreciated.