I'm having problems with my laptop screen. My computer starts up like normal, everything working, screen comes on, and after about 20 seconds a noise starts, the sort of noise your hard-drive makes, it gradually gets louder and louder and about 40 seconds to a minute after start up the screen just goes reallly very dark. It is still working because you can see outlines of stuff on screen if you look very hard and close. But it is so dark it is unsuable. I appreciate any help or suggestions, thank you!
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Re: HP Pavilion, Screen working, but extremely dark!
As per your description, I find that the issue is with the LCD Backlight which is also called as LCD Inverter which lights up the LCD to show us the Display on the LCD Display.
If this Backlight is gone bad, you will be barely able to see the Display on the LCD.
Coming to the Noise you had mentioned above can be from the Cooling fans of the Notebook which will be spinning at high speed when the Notebook starts and will reduce gradually after few minutes.
I recommend you to try cleaning the Cooling fan vents using any Vacuum Cleaner or Air Blower.
I recommend you to contact any nearest HP Authorized Service Center and get the LCD Backlight replaced.
Hope this helps....
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This is a link to with instructions on how to change the brightness of your computor. It may be on too dark a setting now. Another possibility is that the screen has worn out and needs to be replaced. A third is that the computor itself is not working properly now, although you say you hear it on. If it is not a question of brightness (the setting is too low and now everything looks dark), I would take it to a place which repairs HP's.
I see this quite a lot. Sometimes it's a loose connections between the motherboard and the lcd display. Especially if the laptop is 3 or so years old. I'm assuming you did a hard reboot and got the same thing. A lot of time the backlight will give out on olfer laptops and the only thing you can do is replace the lcd display or hook it up to seperate monitor. Two things I can recommend are;
1. Plug the laptop into a crt or lcd external monitor and see if you get the same thing or if you actually get a good image.
2. Press [Function] [F4} and see if switching between exteranl and internal monitors makes a difference.
I had a similar problem with an HP DV2000 notebook computer. Here's the solution for the HP model DV2040TX: Problem identified and FIXED. Not the screen, not the screen power supply. The problem was the micro-switch within the right-hand-side screen hinge. This switch turns off the screen when you close the lid of the notebook - probably to prevent overheating. The switch had failed mechanically (technical term: "fallen to bits"). As a low-cost fix, I have unscrewed the main casing including the screws inside the battery compartment, removed the silver panel covering the speakers, flicked the switch "ON" using a jewellers' screwdriver, and removed the small metal tongue that is operated by a cam on the hinge. Thus, the switch is PERMANENTLY ON. Computer operates normally, shuts down normally using Windows. Just need to be aware not to close the lid without shutting down the computer beforehand. Hope this helps you. All the best, OzKluger
Bearing in mind you mention the viability of cost, I'm thinking your laptop is out of warranty. This does sound like a pretty major problem, one which HP need to look at. You can always approach them for a quote first, with a min/max price, before you decide whether to go ahead or not.