Okay. So for the last few days, our entire screen has been really bright. Like someone has turned the brightness up on it. Only that isn't what has happened. I was on the computer when I saw it happen for the first time. Also, when we log in to one of the users on our computer, the screen will be fine until it has loaded everthing on start up. Then all of a sudden. The screen gets bright. You can see everything, but it's annoyingly brighter then it should be. I have ran a full ad-aware scan, a full mcafee scan and a full windows defender scan. They have found nothing. Please someone help.

Look, not every little bit of 'mysterious' computer behaviour is caused by virus! This is almost certainly a hardware issue, such as an aging monitor etc Sometimes when a virus scan finds nothing, there is nothing to find, and you need to consider other, more likely possibilities I'm not one of those who think Bill Gates is the devil. I simply suspect that if Microsoft ever met up with the devil, it wouldn't need an interpreter.