I was helping my son put together a new computer and we've run across a weird problem. We started with an MSI motherboard, Core i7 processor, generic case, 8 GB ballistic DDR3, and power supply. The motherboard(s) in question have built-in video. I have plugged in the case-speaker to the correct place on the motherboard.
After putting the pieces together and turning it on, I got power to the fans and nothing else - no POST codes, no signal on the video.
So, I replaced the power supply (different brand).
So, I replaced the motherboard (ASRock this time). Same result (with both power supplies in the new board).
So, I replaced the CPU. Same result (with both power supplies and both motherboards).
I have tried all combinations of the above with and without/RAM trying to just get a POST beep, but no luck. I'm running out of parts to replace. My only thought is that the RAM is bad or in the wrong slots (though I've tried more), but I'd think I'd get some sort of POST code by booting without RAM.
Here are the two motherboards
- ASRock Z87 Pro 4
- MSI Z87 G41
The processor is an Intel i7-4770K (I tried two different ones - same model).