I have an ACER Aspire One netbook. How do I brighten the screen?
Press and hold the Fn key while pressing the up arrow key to increase brightness, down arrow key to reduce brightness
It should be Fn then F5 key. has a little sun or lamp on it..that will adjust the brightness..of course, back lighting also has a substantial effect.
Click on this link, then type in the serial number of your laptop.You should be able to download an owners / Users manual.