Strange issue after changing power supply

[Wazuki]

So on sunday my Cooler Master Silent Pro 550W Power Supply died. I turned my PC on, some smoke came out of the PSU basement in my case and after that, when i turned on my PC the fans did start spinning but no signal to monitor and my peripherals didn't light up. I took the old one out and thoroughly dusted my entire PC. Once i got a new power supply (Seasonic g 550 80Plus gold 550W) I have a strange issue with turning on my PC. When i press the power button, fans start spinning but no signal to monitor. Then i press the power button again and my PC turns off. I Press it again right after that and it boots like normal. This has happened for the last three days. I turn my PC off when i go to bed, and once i turn it off, well, it works exactly as i described.

 

What causes this? How can i fix it? Any help is appreciated, thanks!

[Mr.Humble]

Hi,

 

make sure all power cables are plug in all the way, both in the PSU and the components. Make sure the video card is properly plugged into the PCIe slot and the display cable is plugged all the way into both the video card and your monitor. If you have onboard graphics, try plugging the monitor into your motherboard display port and see if the issue persists.

 

If the problem goes away after cable Czeching, you're fine.

If it goes away when you switch display outputs, you may be dealing with a damaged video card. If it doesn't, you may be dealing with damaged motherboard or such.

[why_]

What motherboard/GPU/Processor?

[Wazuki]

Cpu is an Intel Core i5 4670k. GPU is a Gigabyte Windforce GTX 970. Motherboard is an Asus z87-C

[Wazuki]

3 minutes ago, why_ said:

What motherboard/GPU/Processor?

Cpu is an Intel Core i5 4670k. GPU is a Gigabyte Windforce GTX 970. Motherboard is an Asus z87-C

 

[Wazuki]

Yeah i gotta check my cables. Would the motherboard/gpu damage be as a result of the PSU failure, and is that covered by warranty?

[Mr.Humble]

4 minutes ago, Wazuki said:

Yeah i gotta check my cables. Would the motherboard/gpu damage be as a result of the PSU failure, and is that covered by warranty?

It could be the case, but I don't think it would be covered by warranty.

[why_]

If it's not the cables try running off of the iGPU and see if you get a post code. If you do you may have fried your GPU. If that doesn't work its likely your motherboard. Yeah the warranty probably doesn't cover that.