on-board sound

Background information to understand how this occurred: Me and my cousins had downloaded ARK: Survival Evolved which we had played a few months ago but decided to come back. As I start the game I head into the bathroom and as I came back after just a minute my PC was suddenly restarting, I...

I power up my PC but it turns on and same with the case fans but nothing appears on the actual monitor. One thing that I did notice was that the case fans were not running as fast and hard.