Computer turns off after an online game, Why?

[AVDPC]

hello,

I was "addicted" to an online multiplayer game, named Drift City. I was playing this game almost 5years long. But now, I've changed my computer, a new one but it was a long time that I didn't play that game. So I decided to start playing this game again. But every time while i'm playing (after 20-30min), my computer turns off. I don't know why. My older computer did this game run smoothley without problems. But this computer turns off every 20min after playing this game.
I can play the newest games (like watch dogs, battlefield 4,...) on Medium and high quality with 40+fps. But now my computer can't even handle an online game.


Can someone explain me why and what's causing the problem?

Here you see my system:
OS: Windows 7
CPU: AMD A6-5400K
GPU: 1024MB ATI AMD RADEON HD 7700 Series
HDD: 1tb
Memory: 8gb ddr3

The min. requirements of the game:
OS: Windows 7
CPU: Pentium 4 @ 1.8 GHz
GPU: 64MB graphics card
HDD: 64gb
Memory: 256MB or better

I hope you guys can help me to solve this problem!

 

[PCBuilderProbs]

monitor your temperatures with either SpeedFan or Core Temp to make sure you're not overheating during gameplay.

 

[AVDPC]

It's weird that my pc turns off when I play that online game. (the CPU becomes arround 90-100degrees while playing, and my GPU arround 40 degrees) It never turned off before. I didn't overclock it and I use the stock cooler.

 

[PCBuilderProbs]

It's weird that my pc turns off when I play that online game. (the CPU becomes arround 90-100degrees while playing, and my GPU arround 40 degrees) It never turned off before. I didn't overclock it and I use the stock cooler.

the game is most likely unoptimized and runs your CPU at max. You have a few options here: either
1. Get a new heatsink where it can handle a full 100% CPU load
2. Use AMD's Catalyst Control Center to lower your base clock so it won't overheat
3. Set the process' affinity in task manager (task manager, show processes for all users, right click specific process and click set affinity) and limit the process to use only a few cores out of your CPU