Until recently my laptop, an Asus Vivobook with an i5-processor, touchscreen and a 500 gig harddisk, worked just fine, no problems whatsoever. But when I started playing GuildWars 2 it developped a nervous 'tick'. Let me explain: of course the battery of my laptop doesn't last forever, so sometimes I have to plug it in while playing GW, and as soon as I do that the screen starts to black out randomly, as bad as sometimes every 3 seconds. It turns itself on again, and there's no loss of performance (at least not a noticeable one). It gets worse: when I stop playing it continues to flicker on and off. I know that it's not a heat problem, at least I don't think so. SpeedFan detects temperatures up to 67 degrees while playing, but that's it, my laptop should be able to handle that. Can anyone help me?