[SOLVED] Sparks, smoke, and a bad smell coming from the case

[ActuallyAqua]

I had just installed a PRIME B350-plus motherboard, and a Ryzen 5 cpu into my old machine (we are talking built in 2012). At first the build didnt turn on. I saw that the motherboard's power cable wasn't plugged in all the way, and I sort of forced it in. It turned on, but within seconds it made a popping noise. It looked like some sparks came out of the motherboard (could've came from somewhere else), and I instantly unplugged the build (probably a bad idea). There was smoke inside the build, and it smelled bad. I thought that my psu definitely exploded, but I just need another person's perspective. The full specs are 16gb of ddr4 ram, Corsair CX750M psu, GeForce GTX 780Ti, PRIME B350-plus motherboard, Ryzen 5 1600 processor, and a 500gb Samsung ssd.

 

[rgd1101]

hopefully is just the psu and motherboard.
might have fry all the other components too

 

[Mtop]

Use your nose to find bad components. If there was smoke then something will smell bad - power supply or a component on the MB or other device.
If as you say there were sparks then use your eyes and a magnifying glass as well.

 

[Flayed]

Did you force the power connector in with the system turned on?

 

[ActuallyAqua]

Did you force the power connector in with the system turned on?

Yes, but I installed a new power supply. It boots fine, but now there's no display. Also you have to manually unplug the system to turn it off, but it turns on fine.

 

[USAFRet]

Yes, but I installed a new power supply. It boots fine, but now there's no display. Also you have to manually unplug the system to turn it off, but it turns on fine.

Is this a modular PSU, and did you use the cables from the old PSU?

 

[Flayed]

Yes, but I installed a new power supply. It boots fine, but now there's no display. Also you have to manually unplug the system to turn it off, but it turns on fine.

Can you try your graphics card in another system to see if it works?

 

[SkyNetRising]

Yes, but I installed a new power supply. It boots fine, but now there's no display.

If there's no image, then you can't call it - "boots fine".
Obviously it's not fine.

 

[Chuckiechan]

Can you try your graphics card in another system to see if it works?

Have you checked the dumb things? Like monitor on, video card plugged in, etc.
Also, if you have on board video, try that.