While playing league I get black dots on my screen, sometimes my screen will go black, and...
While playing league I get black dots on my screen, sometimes my screen will go black, and my mouse glitches? I will be playing league and see about 7 black dots appear in a line, sometimes close together, sometimes spread apart usually in random spots on my screen. The third time I saw the dots, my screen went black and I had to force shut down my computer, turn it back on and then restart my client to fix it. Then, the most recent thing that has happened is my mouse will act like there is a line in the middle of my screen and won't let me push it up or down, it's almost like my mouse's speed goes all the way down for a while and then is normal after a period of time. At first when I saw the black dots, and when my monitor turned black I thought maybe I needed a new monitor, but my boyfriend has been having the same problem, so I don't think it's my monitor.
Edit: The mouse part was from me, one of my dog's hairs were in the lens lol. Sorry! Everything else is still happening with me, the black dots!!!