Computer is Half On, Slight Burning Smell

Jurist Chan

Reputable
Apr 5, 2015
2
0
4,510
I recently replaced pretty much every part of my computer because it wasn't working a while back. Yesterday, it ran perfectly fine with all of the new parts. This morning, my computer wouldn't turn on. When I opened up the case, I could smell a faint burning smell. The power button on the motherboard was lit, however, when I pressed it, nothing happened. I turned the power supply off and back on, and everything started running, however, the motherboard stayed off, as the two numbers to signify errors were not lit. All of the fans were running, but the hard drive had a clicking noise for about 30 seconds. Nothing was projected to the monitor. Yesterday, I put in a third party CPU cooler. While installing it, I noticed that the actual cooler didn't completely cover up the CPU, which I suspect caused the problem, but I'm no expert. Here are my system specs:

PSU: EVGA 850 G2
CPU: AMD Athlon II X4 760K
CPU Cooler: Cooler Master Hyper T2
Motherboard: Gigabyte GA-F2A88X-UP4
GPU: Geforce 660
Hard Drive: Western Digital 1TB Black
RAM: 16 GB Crucial Ballistix Sport (2x 8GB)

I tested the PSU with a paper clip, and it's fine. I tried using individual sticks of RAM, but nothing changed. I tried resetting the BIOS, but nothing changed. Any help/advice will be gratefully accepted.
 

Jurist Chan

Reputable
Apr 5, 2015
2
0
4,510
My CPU doesn't have integrated graphics. I took out everything except the motherboard and fans and PSU, and found that when I turn it on, all of the fans run and the motherboard light turns on without a CPU, GPU, or RAM. I believe the PSU is just allowing power to flow freely throughout the cables.
 
Sorry, I noted the A88X board and assumed APU even though I looked right at it being an Athlon. My bad. Sounds like a motherboard issue to me. The PSU simply supplies the power but the motherboard determines who gets it, if at all. I suppose it's theoretically possible for either component to be at fault, but I'd be leaning towards the motherboard.

Do you have another power supply you can test it with? It's highly improbable that it's not the PSU, but it would be prudent to be certain.