weird. New Build worked perfectly in my bud's house for ~ 1 month. Last night he called me to say that it just shut off by itself. sure enough, I go over, turn the pc on and ~ 3 minutes later it shuts off by itself. the green power light on th case is slow blinking. I can't turn the PC back on until I wait about 5 minutes and the slow blinking green light stops. then, the same scenario re-occurs. I bring the PC home and it does not fail whatsoever. This makes me think that he may have a power issue in his house. He lives is a newer "McMansion". I did have it connected to a UPS. It did fail while connected to the UPS AND it fails when connected directly to an outlet. Not sure what to think....or to say to my buddy! Should I try to replace the PS? Thanks.
Or maybe something is not seated properly inside the computer. Maybe CPU's heatsink. When you move it around it fixes or breaks itself.
DING DING DING DING!!! WE HAVE A WINNER!
You hit the nail on the head my friend; After a closer inspection, I found the CPU heatsink more or less floppnig around! How the heck could that come unconnected like that? I replaced the Heatsink to be on the safe side and so far so good after ~ 1 hour. I'll deliver to my friend's house tomorrow. thanks!