Computer not turning on at all

[evanphillips]

So I built this PC around three years ago, here are the specs

Cpu: i5-4460

Gpu: msi r9 390 gaming 8g

Motherboard: msi h81m-e34

PSU: EVGA 600b bronze 80+

Ram: cheapest 8gb ddr3 I could find

HDD: not sure exactly model but Toshiba 2tb 7200rpm

Ssd: Samsung 850 Evo that I boot Windows from

No surge protector

So around last week my computer just stopped turning on, it doesn't turn on then crash or anything like that, I just press the power button and nothing happens. Once i looked over and it was on, but my monitor was just blank and I couldn't turn it off, later I came back and it was off again couldn't turn it on. Ive tried fixing it but nothing seems to work I really need some help with this.

What I've tried:

First I tried plugging it into a different socket that definitely works, to no avail.

Next I tried replacing the cord I plug it in with

When that didn't work I took out my gpu and replaced my PSU with my brother's EVGA 500w 80+ Silver. I thought that would for sure fix it but still nothing.

I figured it must Be the power button, so I took my brother's case and plugged the POWER SW wire from it into my motherboard to try to turn it on from his case and that didn't work.

So now I don't really know what to do, I guess it must be the motherboard or cpu that's dead? What do you guys think?

 

[Jwpanz]

You did a good job of eliminating the PSU and case power button as the issue. Following the flow of power, the next, and most likely, cause of the problem is the motherboard itself. Check the motherboard for any bursting capacitors, fried leads, or anything that looks like it may have burnt. Even if you don’t find anything like that it could still be an issue somewhere within the network of power delivery on your motherboard.

CPU’s rarely just die like that especially one as recent as yours. While it could still happen, the likely culprit here is the motherboard and I would advise swapping it out for a new one.

 

[SgtScream]

Reseat the memory modules.

 

[evanphillips]

Thanks to jwpanz, luckily I had a similar motherboard board laying around so I installed it and it worked like a charm

 

[Jwpanz]

Awesome! You’re lucky (or wise) to have a spare compatible motherboard lying around lol. I’m glad you got it figured out.