If it is possible to set the brightness of your screen, it will dim when the computer is idle in order to save power. When you start using the computer again, the screen will brighten.How do i Dim my computer screen?
Click the "Start" button, type "power options" and click on the matching entry for "Power Options" in the search results. Click and drag the "Screen brightness" slider, located at the bottom of the "Power Options" window, to the left to dim the display.How do you brighten your HP laptop screen?
Press and hold the Fn key, and then simultaneously press the F key to brighten the screen. Brighten the screen in increments by tapping the F key, or adjust the screen to the brightest level by holding down the F key.