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Question Custom new build pc keeps turning off when gaming:

Jun 15, 2020
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Hello all,
This is my first time building a PC and everything was running smoothly, however, the PC now turns off when running games - there is no set interval when this happens, it's random and I have checked forums on here and people seem to be suggesting a number of reasons and I was wondering if anyone more experienced would be able to pin-point the issue with my system.

I will outline the parts used in the build.

Motherboard: B450 Tomahawk Max AM4
CPU: AMD Ryzen 5 3000
RAM: Corsair vengeance RGB pro 16BG (8GBX2) DDR4 3200 MHz
GPU: Msi Radeon rx 5600 XT Mech OC
M.2 SSD: Samsung 860 EVO 250GB
SSD 2: Sandisk SSD Plus 240GB
HDD: Toshiba 2TB
PSU: Aerocool Integrator MOD XT 750W Bronze.
Monitor: Dell SE2417HGX 23.6 Inch 60/75Hz with AMD FreeSync
Case: MSI MAG FORGE 100M Mid Tower Gaming Computer Case (Removed one stock exhaust fan and added 3 corsair fans and kept the two fans on front of case as intake fans). I have tried adding another fan in the front, however, there is meant to be space but i'll have to take out the drive bays to gain access to the last fan in order to move it down to make room for another one.
OS: Windows 10 Pro.

The game that I have noticed a shutdown and restart on is PUBG. I was playing on Ultra settings but I figured I might be pushing the system too much so I dropped down to high, same thing, and then I dropped other settings down too and it still happens.
The thing is, there are times where I am able to play a couple of games without a shutdown, however, other times it's right away.

Works fine when it comes to doing microsoft office tasks, watching youtube videos and creating loom content.

Troubles I had early which might help someone determine the problem.
When I first booted up the system, I had trouble getting a bios menu come up on a TV that I used (older TV with HDMI capabilities, however, I tried on a newer 4K tv and eventually it worked. I updated the bios and installed latest updates from MSI website and I used AMD's Radeon software to make sure that the GPU was up-to-date.
I also bought a new monitor that is 60Hz with 75Hz using AMD Freesync (I know not a great monitor, but I did not think it would have an impact on PC shutdowns but I'll put it here anyways).

I apologise for a very long post but I figured someone out there with a lot more experience than me will be able to say what is wrong (or an idea where to look).
I checked the CPU and GPU temps while playing the games and CPU was at around 55/58C and the GPU was at around 70C

Any help will be greatly appreciated.
 
Jun 15, 2020
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I have also been getting green screen crashes too. What could possibly be the issue.
PC works like a dream unless I'm playing particular games - PUBG being one. I can run tomb raider on max settings with no issues, same with it's bench mark.
 

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