Question My computer keeps hard crashing, having hard time pinpointing cause.

Apr 9, 2019
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My build:

Radeon Software Version - 19.1.1
Radeon Software Edition - Adrenalin 2019
Graphics Chipset - Radeon (TM) RX 480 Graphics
Memory Size - 8192 MB
Memory Type - GDDR5
Core Clock - 1310 MHz
Windows Version - Windows 10 (64 bit)
System Memory - 8 GB
CPU Type - Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz

Every game I have been playing is completely selective in when it will work or not. I can play PUBG or Apex Legends for 5 hours and have no issues, but go back an hour later and it hard crashes my computer completely randomly. The game image cuts out and a hard static buzz goes through my speakers. A completely random colour will take over the screen and I have to restart my PC.

I thought it was a overheating issue and installed MSI Afterburner and it has reduced the crashes, but they still happen from time to time and it is completely unpredictable.

I'm not as computer literate as a lot of people on here, hopefully it's not too complicated of a fix!

Thanks.