Both GPU and CPU at 95c within seconds when playing simple games

[Gimatria]

I just bought a second-hand PC. I wanted a budget gaming PC that could play the games I play; Dota2, Civ V and Path of Exile. These are the specs:

Processor: i5 2500k with cooler master TX-3
Motherboard: Asus p8z68-v
Memory: Corsair 8GB(2x4GB) ddr3
HDD: WD Raptor 320GB 10.000 rpm
Power supply: Cooler Master GX Lite 600 Watt
GPU: EVGA GTX580 3GB

This system should easily run these games. I played Dota2 at max graphics at 120 fps for an hour on the first day. But after a day or two of playing the games began to crash on me. The fans were really loud. So I installed HW monitor to check on the GPU and CPU fan speed and temperature.

I changed the graphic settings in Dota2 to the very lowest to see if that made a difference. Within seconds (literally 20 seconds) of spectating a game of dota, the temperature of both CPU and GPU skyrocketed to 97c and 90c and the GPU fan went to 4000 rpm. Afraid of completely breaking it, I stopped the game.

I opened up the computer and checked all the fans, they were very clean.

Edit: I have also upgraded all the drivers and BIOS.

Any help is greatly appreciated!

 

[maxwellmelon]

how many case fans do you have?

are they running overclocked settings on both the video card and cpu??

did the person you buy it from mess with the thermal paste? did they remove it all then sell you the pc? sounds like really you need to redo the thermal paste on both the cpu and gpu because it really sounds like they removed it or something abnormal but when you remove the cooler to check it your going to have to put new paste anyways

 

[Gimatria]

The GPU has 1 fan and a fanpwm (not sure what that is). There are two other fan in the case.

Nothing is running overclocked, and I did a clean install.

Ill check with the seller what he exactly did. I guess I'll just go to a local computerstore and have some new thermal paste applied, since I'm clumsy as all hell and will probably ruin the entire system.

Thanks for now, will update if it worked

 

[maxwellmelon]

The GPU has 1 fan and a fanpwm (not sure what that is). There are two other fan in the case.

Nothing is running overclocked, and I did a clean install.

Ill check with the seller what he exactly did. I guess I'll just go to a local computerstore and have some new thermal paste applied, since I'm clumsy as all hell and will probably ruin the entire system.

Thanks for now, will update if it worked

well you sound like you have enough fans. sounds like something abnormal is going on like thermal paste missing/applied wrong.