Hey folks, something had come up with my ASUS P5K mobo, I had sent it back in warranty, Got a new one yesterday.
I was up all night, taking out my spare board and putting the new in, anyways, when I had screwed everything in, switched it on, the fans started, lights got on and then the system restarted after 5 seconds without anything on the monitor, then ran for 5 seconds, off again, kept doing this.
I stripped everything (tedious! Unscrew everything, Gfx Card, cooler etc etc) It still kept repeating the same thing even with only the CPU and ram, I took out the RAM, still the same.
Then I took out the CPU, placed it in my Intel Board, it kept running, then I took it out again, placed it in my ASUS board back, this time it ran fine, did not restart, I checked properly the CPU was seated perfectly both times, the socket latch closed properly, now the system is working, but still what could it be? It was CPU related that I know, but what causes this "phenomenon", thanks, sorry for the long post