Question Is my Motherboard Dead or is My CPU Dead?

[HappyTorrent]

First off, Motherboard is an Asus H87M-Pro and the CPU is a i5 4430S, 8GB RAM and a 500W thermaltake PSU.

Symptoms: Motherboard shows it has power (phosphor LED lights up) but won't respond to the "power" button, even quickly shorting the PW_SW pins with something like a knife or screwdriver doesn't turn it on. I've removed the ram completely, still same issue. I even removed the CPU, motherboard still only lit up not responding to power switch input. I've cleared ram, replaced cmos, even found a PC speaker to add and it doesn't even give error codes.

TL,DR board has power but acts the same no matter if I have CPU/RAM installed or not. Is this a mobo issue or a CPU problem? I've never experienced this before, so I'm quite stumped. I don't have any extra CPUs for LGA 1150 and I can't find a spare MATX 1150 motherboard anywhere local, only ATX boards which won't fit my case. At this point I'm just ready to give up 🤷🏻‍♂️

 

[Lutfij]

Thermaltake is the brand for the PSU, 500W is the wattage, what is the series/model for the unit and how old is it?

We will also need more info. List your specs like so:
CPU:
Motherboard:
Ram:
SSD/HDD:
GPU:
Chassis:
OS:

As for not having a processor or ram on the board while it's being fed power, it'll never power up.

 

[HappyTorrent]

Thermaltake is the brand for the PSU, 500W is the wattage, what is the series/model for the unit and how old is it?

We will also need more info. List your specs like so:
CPU:
Motherboard:
Ram:
SSD/HDD:
GPU:
Chassis:
OS:

As for not having a processor or ram on the board while it's being fed power, it'll never power up.

Off the top of my head, can't remember what the PSU is. But I know it works cuz I got it powering a Pentium system. As for no cpu/ram that was the point, they were taken out for troubleshooting.

No HDD/GPU as I was only breadboarding to test parts. CPU/Motherboard are listed in the first post. RAM is Gskill sniper DDR3