Hello, Just like most of you reading this thread I have a RX 580 that black screens when playing games for a second and then pops back up like nothing ever happened. To make this concise I have tried the common fix of boosting the amount of power allowance in wattman settings among various settings which can be found online readily. These did not work however and thus I looked at buying a new gpu. I picked up a 2080ti and after using it for a bit needed to take it out to install a new cooler, within this time I plugged my RX 580 back into my computer and started playing games on it and I haven't had a black screen since. While I'm not sure exactly what fixed it, I would recommend reinstalling your graphics card drivers if what else is online doesn't work. Just wanted to post this so other people will have something to help them when nothing else works. Ill attempt to answer any questions in the comments below. Thanks.