I had just rested the computer and the computer goes dim and I can't make the screen brighter .You can't really see it but its darker in the top right corner, when the computer starts up I can still see the dark spot in the top right I don't know what to do
What type of Monitor is it ? LCD / LED or older ? I would try a different Monitor to rule out Video... Onboard Video can also go bad.. Is this a desktop or Laptop ?