Solved HP G72 laptop screen shows white spot?

May 18, 2012 at 17:20:18
Specs: Windows 7, E5200, 4GB DDR-II RAM

I just noticed that my laptop's screen shows a white spot. The laptop is HP G72.

I don't think that this is a dead pixel. I have never seen what a dead pixel looks like, but it is my understanding that dead pixels are just... dead, meaning that they do not emit light at all, and just look like dark dots on your screen.
In my case we have the opposite phenomenon: the area where the problem is emits even more light than it is supposed to, creating that white spot effect.

The white spot is best visible on a lighter background.
Here is a video of a guy who has a very similar problem. In his case the laptop is a ThinkPad and the spots are more than one, but they look very much like the spot that I have on my HP G72 screen.

http://www.youtube.com/watch?v=vVpg...

What is this white spot, what is causing it and is it repairable?
Thanks!


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✔ Best Answer
June 19, 2012 at 15:32:36

If the spot is darker than the rest of the screen, it's burn-in or more correctly named "image persistence". If it's lighter, it's due to physical damage such as a finger being poked at the screen.

Sometimes image persistence can be cured, there is a good Wiki article that describes what causes image persistence and step you can take to try and fix it.
http://en.wikipedia.org/wiki/Image_...



#1
May 18, 2012 at 18:26:46

That cannot be caused by a software problem.

Either your LCD assembly is damaged, e.g. something such as finger damaged it where the white spots are, or the white spots are caused by "burn in" - the same thing being displayed in the same place continuously for a long time.

If you connect your laptop to an external monitor, you will probably find the white spots are not there on that display.


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#2
May 18, 2012 at 18:31:37

Yeah, I figured it's some sort of damage. But I want to know what is causing it.
I don't think it's a "burn in" that is caused by displaying same thing on same spot.

No mechanical damage was ever inflicted on the screen too.


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#3
May 18, 2012 at 18:38:18

You can't do anything about it other than replacing the LCD assembly, or using an external monitor instead.

Most laptops have a key combo that you can press to toggle the display to external video only / built in display video only / sometimes both - see the Owner's or User's manual for the model (e.g. press both Fn and Fx ; x is a number).

If you're still getting video where the white spots are, if it's more annoying than severe, you could just try to ignore it.


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Related Solutions

#4
May 19, 2012 at 03:32:22

This is usually caused by pressure on the screen. For example, if you point something out on the screen with your finger.

Meestal wordt dit veroorzaakt door druk op het scherm. Bijvoorbeeld als je iets op het scherm aanwijst met je vinger.


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#5
May 19, 2012 at 09:08:48

Hi, I haven't put any pressure on the screen,
I have never pointed at it with my finger and actually, the laptop has never left my bedroom. I have never put it in a travel bag or anything like that where it could potentially get pressed against another object.
I use this machine exclusively while I am in bed.

I am starting to think that the only way the spot could have appeared is by me closing the laptop while it was still warm. However, the spot is in a place where the base doesn't get warm.

What is this spot after all? Is it called "pixel bleeding" or something?


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#6
May 19, 2012 at 11:35:19

There are only two causes for the white spot as far as I know, as I explained in response 1. The second one isn't likely unless there has been something that was displayed in the same place for a long time.

If anyone else has EVER had physical access to the laptop, it's quite possible they physically damaged the display and didn't tell you, especially if they're likely to expect a negative reaction from you if they did tell you. Some people these days will never admit they've done something wrong unless they're caught doing it. Only you know whether someone you know would be likely to not tell you.
.
Does your display have a relatively soft surface (does it move slightly when you touch it ?) , or a hard surface ?. It's much more likely you'd get a white spot from physical damage if it has a relatively soft surface


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#7
May 19, 2012 at 14:16:36

^ Hi, I think it has a rather hard surface.
You might be right that the damage was caused by somebody else who has access to my laptop. I don't expect a confession from them, though.

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#8
May 19, 2012 at 14:58:55

"You might be right that the damage was caused by somebody else who has access to my laptop."

That seems to be common these days - irresponsibility.

I would tell you, regardless of the consequences.


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#9
May 19, 2012 at 16:00:20

I hear you.

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#10
June 19, 2012 at 13:04:35

I have a similar problem on my G72. Is it in the bottom right corner? Mine is, on the other side of the silver HP logo. When I look at it in the right light, I can see the shape of the logo circle. I think it has something to do with that.

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#11
June 19, 2012 at 14:59:51

Hornet1937

It sounds like your white spot is "...caused by "burn in" - the same thing being displayed in the same place continuously for a long time. "

Disable whatever icon was displayed there from being displayed if you can figure out how to do that,

or to minimize any further damage caused by that, or to lengthen the useful life of the backlight behind the LCD screen in any case, set your Power Options in Control Panel to turn off the monitor after xx minutes (of user inactivity) so that no video is produced in that circumstance.
Moving your mouse or pressing a key will restore the display in a very short time after that has been triggered and the display has gone black

(The liquid crystal pixel grid does not produce light - it colors or lets through or blocks white light coming from the backlight in behind the grid. If there is any video at all on the screen, the backlight is on behind the LC grid (screen). The backlight for a conventional LCD display is a CCFL - Cold Cathode Florescent Lamp - it burns out eventually just like any other florescent lamp. )


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#12
June 19, 2012 at 15:32:36
✔ Best Answer

If the spot is darker than the rest of the screen, it's burn-in or more correctly named "image persistence". If it's lighter, it's due to physical damage such as a finger being poked at the screen.

Sometimes image persistence can be cured, there is a good Wiki article that describes what causes image persistence and step you can take to try and fix it.
http://en.wikipedia.org/wiki/Image_...


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