So it only crashes while playing games. It doesnt necessarily mean while playing games, i can be waiting in the menu and it crashes. So when it does a random color appears on my screen and i can only restart by switching the power button on the back of my PC. I dont know what kind of PSU i have as this is a prebuilt PC only thing i know is that its 500W and has bad voltages. And one last thing is that sometimes i get artifacts, but i only get them in PUBG and Escape from Tarkov, in Tarkov i usually have a pink light in the corner of my screen, while in PUBG my inventory switches to green,yellow etc... If you need any additional info please say so