I have seen similar issues to this on this and other pages, but have been unable to find a solution. Hopefully somebody can help.
I have an Acer Aspire 5610 XP laptop. I do not use an external monitor.
Seemingly for no reason, a black bar about 2 inches thick appeared on the right side of my screen, there is also a bar along the bottom, but it is blue and blurs the cursor if I put it there.
The black bar is effectively the end of my screen, I can not move my cursor there, and the sceen is shrunk as though I am using a square CRT (mine is widescreen). I can't just drag the edge of my screen to expand it.
I've tried both removing my video driver and installing the original one, and updating to the newest Intel driver. I can't find any conflicting drivers.
Every once and a while, the computer boots using the full screen, but when I restart the computer it goes back to the square screen.
There are no monitor sizing controls, as it is a laptop.
Any suggestions would be appreciated, this issue is very annoying.