I also have the same problem: the screen goes black during a game. I'm guessing that the blinking adds bring this on (and it is so enjoyable that the adds keep on blinking while I forfeit my match, thank you). If the adds are the problem, I assume paying, what, $8 for an annual subscription, will maybe solve this? I don't understand computers (nor chess, to any significant extent!). So I'd sure like it if someone will shed some light on the dynamics of this problem. what causes it?? thank you, chess loser.