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Acer aspire desktop. Screen suddenly dims a fraction then the screen goes black. It a driver problem or a problem with the video card. Could the problem also be a in the monitor itself. The current video card i think is a NVIDIA GeForce 7100.

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What you have explained it sounds like the monitor itself is faulty and nothing to do with the computer, it may be worth trying another monitor to see if the same thing happens.
If the screen is fine with another monitor, then your monitors lcd backlight is beginning to fail, these can be changed out but can be fiddly.
Next it could be the graphics card, is it the original, or has it been updated to this one, it could be your power supply is on its way out, and is not pumping out enough watts to power the graphics card properly and therefore you are getting the fade that you speak of. The power supply in these computer are normally no more than 300watts, so upgrading these computers do somtimes involve upgrading the power supply first.
hope this helps and post back what you find.

Posted on Aug 21, 2010

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Defective CCFL backlight may has the following symptom:
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Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.

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Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.

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The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
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Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
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Please do these steps:

Right-click on the Desktop > Properties > Settings tab > Click Advance button at the bottom > Go to Adapter tab. Tell me everything under the Adapter Information.

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