HP Compaq Presario R4000 (PN495AV) PC Notebook How
Yes, go to Start>Control panel>Power Options. There also should be a screen brightness key on your key board, that looks like a sun shining, with arrows pointing up & down. To use that key, hit the FN key, right next to the Ctrl key. Push & hold the FN key, while pushing the up arrow. That should increase the brightness of your display. Good luck.