Compaq CQ60 Blank Screen

Nav - May 29, 2015 at 10:00 AM

The screen of my HP CQ60 laptop suddenly went blank while I was working on it.

I opened the laptop and cleaned the fan which has a bit of dust in it.
After this the screen came back.

But the problem reappeared after a few days.
The screen went blank while I was working.

Also sometimes the screen does work when I start the laptop.
But most of the times it is blank.

When the screen is blank connecting the VGA output to television also does not work.
Used the Fn + F4 key to switch the screen but no luck.

I have read lot on the forums but none of the solutions have helped.

Tried to disconnect the battery and hold the power button for more than 60 seconds.

Also interchanged the RAM.

My basic issue is that why does the screen works some times.
If it was a cable loose then the VGA output to television should have worked.