Sorry, I have to disagree. (Please don't kill me!)
The large box that you plug into the wall is a transformer. It converts 120-V AC into some DC voltage (usually 12 V I think). Though I have very little faith in the technical...
Well, your notebook may only be 8-months old but the 6800 go is a bit older. You may need to turn down the visual effects a bit.
Before resorting to that, however, make sure you have the latest drivers and the latest game update.
I tried to set it as my desktop, but for some reason the background changed to black, making most of the machinery invisible. Is there any way to fix that?
(I already tried changing the desktop background color.)