Help! I have a problem.

My screen goes black after a moment when I go inactive. It started doing this today during Baal. I went afk and when I cam back, my screen had gone black and I had stopped participating in Baal.

So it's a major problem for banish events, but it's also a problem for auto-collect.

I tried removing the screen-saver, but it doesn't seem to be the problem because my screen still goes black.

Can anyone help me out?