Anyone else experiencing this bug??

Now it might actually be my trash PC, but recently whenever I enter the in-game loading screen my PC's actual screen just turns off. I don't know how to fix it on the spot so I have to restart it. Since my PC isn't the best, by the time I return I'm to late and have already received a low priority queue timer because of a remake or that I've been afk for too long. This is really annoying as its happened a few times now (it's never happened before, only for the past 2 weeks or so) , and the fact that my timer is at 20 minutes. I've submitted a ticket already but I'm looking for some tips on how to fix it. All help is appreciated, thanks