CPU overheating issue

[StormPrince]

Computer turned off. Black screen, no power.

Extension lead also lost power. (Only computer + monitor + router connected)

Next time it turned on smoke came from GPU/motherboard PCI slot.

After completely unable to boot for more than a day, switched power cables managed to get it to post (no display output) after leaving on for 4 hours display output suddenly appeared.

It's now working completely fine for short periods of time however, AIDA says CPU is throttling and temps are instantly at 80+ from when system boots.

This is felt in games as I'd start at 100-200fps then instantly drop to 11 in a matter of seconds and it stutters

I uninstalled the 2 Fans connected to the x62 Kraken cooler but theres stil two of corsairs maglev ones on their, maybe configured wrong? but i doubt it would cause over 100 degrees temps.

 

I'm unsure where to go from here, I was thinking maybe the pump had gone on the CPU cooler? Any advice would be greatly appreciated.

 

Specs:

i7-4790k + X62 Kraken water cooler 240mm? rad

980ti XTreme gaming waterforce

240gb Sandisk SSD + 1Tb hard drive

Z97 MSI Gaming 5 Motherboard

CX750 corsair PSU

16 GB corsair vengeance pro ram

 

[StormPrince]

Feel free to give me a list to work through if you need more information.

[Praesi]

Dude, are you serious?

Smoke?

[StormPrince]

Yeah, Its working though.
I think it was rubber on the wire burning

[mbntr]

I would dust off the computer, if this doesn't work i'd remove the cpu cooler and change the thermal paste, it could be hard to find some during the pandemic

[StormPrince]

Yeah I had some at my house but I'm currently looking after someone so I cant get hold of any, I can dust of the radiator but do you really think around 2 years of dust build up could cause those kind of temperatures?

 

I cant replace the CPU cooler right now unless I find some cheap stuff at asda or something