Penguinbait: By "three buttons on the top edge," do you mean the three physical buttons on top of the 770 (none of which work when I'm in OPENBOX) or three of the numerous buttons on top of the screen (which only appear sometimes -- I don't know how)? I do not have (or cannot find) a zoom- button, and the zoom+ button doesn't work. And the white Internet connection screen is immovable once brought up. I suspect that this is not very helpful, but it's the only information I can see to provide at this juncture. Sorry.