READ THIS FIRST PLEASE
First of all, I know this isn't a good place to ask and I should ask on specialized website, but, I made it here because after the 12 website (french and english and even on Steam) I've put my problem on and no real answers, I'm desperate.
So, where the problem? My computer can't run a game without dropping the FPS below 20.
I've test it on Overwatch* (60 FPS average), GTA V* (60 FPS average), Team Fortress 2 (up to 140), The Forest*(60), CS:GO(120), Killing Floor 2*(70), Garry's Mod(90), Unturned (120) ... *Minimal quality possible
And they ALL drop below 20 FPS after 10 min in the game and they keep dropping every 25 seconds. I even put a software to keep the fans at least 80% of their maximal and made the main fan at 100%.
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Processor: AMD Athlon X4 960K
GPU: AMD Radeon R7 370 Series Graphics --- 2048 MBytes
Memory: 8 GBytes
...
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I've:
Clean the interior of my PC.
Deleting everything and go back to zero.
...
And the problem is still here. I really need help on this one and my parent don't allow me to have an another PC even though they know this one is bad.