Video has messed up color issues

November 27, 2009 at 11:16:28
Specs: Windows 7

Hello! my computer has been having issues for almost a month now and I have been trying hard to fix it myself but i've had no luck.

My computer is having problems with its video. The colors are completely off - White is Purple, black is green and some colors have horizontal lines running through them and others have white dots that pop in an out. However, when i plug in an external monitor, the screen looks perfectly fine.

I've already tried replacing the LCD screen and it didn't work. I'm currently completely out of ideas on what the problem could be. Any help is appreciated!


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#1
November 27, 2009 at 11:28:50

When you replaced your laptop screen was there any difference?

Did this problem occur all at once, or gradually over time?

Penny wise and pound foolish to replace the screen without knowing for sure that was the problem.

Was the laptop dropped or stressed in some other way. Can you warp the screen if you GENTLY twist on it?


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#2
November 27, 2009 at 11:36:42

No there was no difference when i replaced the LCD and when you twist the screen it doesn't change at all.

The computer was dropped, but it worked for 2 or 3 days after until the problem happened. It happened all at once for the most part, but for a few days I was able to get the screen to revert to normal by changing the color of the desktop background. Although, that didn't really keep it normal for very long. 10 to 20 minutes at most.


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#3
November 27, 2009 at 11:50:10

Well, it seems the graphics chip is OK or the external monitor would also be pooched. There are only a couple of other parts that make the screen work. The cabling, the back light, and the inverter. Doesn't sound like a back light issue.

Google for laptop inverter testing. The link below is one hit.

http://www.fonerbooks.com/test.htm


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Related Solutions

#4
November 27, 2009 at 12:15:23

Oh, speaking of cabling, I forgot to mention that I also replaced the cable from the motherboard to the inverter (I think that's what it was).

So, I guess that leaves the inverter! I'll do the test and respond back with the results.


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#5
November 27, 2009 at 12:20:23

Unless the case is bent and warping the screen. LCD screens go squirrely when twisted. When you close the lid does it appear to meet the bottom evenly?

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#6
November 27, 2009 at 12:22:46

Yes, it seems to be meeting the bottom evenly.

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#7
November 27, 2009 at 12:42:48

Ok, I gave the test a try and I was able to get a reading of around 35-46 hz depending on where I put the probes. I followed this sites instructions:

http://www.ehow.com/how_5345095_tes...


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#8
November 27, 2009 at 14:15:40

I haven't got a clue how to test an inverter so I can't help you there. You may want to start a new thread in the hardware forum here.

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#9
November 27, 2009 at 16:38:26

This is the hardware forum... Why would I need to make two threads for the same problem...

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#10
November 27, 2009 at 17:21:52

Because no one else has joined in here and this thread has move down the list. Do what you want to do then.

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