I have an HP G60 and the screen keeps going dim…but when I close and open it it comes back up for a few seconds or so..I’ve tried fn + f8 but it does not help and I’ve tried adjusting the power plan when it gives me more than ten seconds to do so…please help!
Most likely it’s either failed screen inverter or failed backlight lamp inside the LCD screen. Which one is causing the problem? You cannot tell without testing the laptop with a known good inverter or LCD screen.
Both the inverter board and backlight lamp have very similar failure symptoms.
If you don’t have spare parts and have to guess, try replacing the inverter board first. If it doesn’t help, replace the LCD screen.
This guide explains how to get inside the laptop. This is guide for HP G50/G60/G70 notebooks. Also, will work for Compaq Presario CQ50/CQ60/CQ70 notebooks.
Also, your problem could be related to the video cable or motherboard but it’s not very common.