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Laptop, display problem - Computers & Internet

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Ethan Jack

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Hi,
Dear User..Does the Screen have a displayed Image?

If the laptop has no image at all it can be video card or LCD cable or the LCD panel. About the only non-invasive test you can try is to plug an external monitor into the laptop. This will determine if the problem is motherboard/graphics card or lcd cable/lcd screen. If you have an image on the external monitor then its likely to be lcd/cable/lcd screen.

Is the Displayed Image Faint?

A dim screen can be caused by three things;

1/ The LCD inverter which runs the LCD backlighting

2/ The CCFL backlighting fluro tube in the LCD panel

3/ The motherboard supplying signal & voltage to the inverter.

Thanks

Posted on Jan 30, 2013

  • khanjari Jan 30, 2013

    Laptop lcd show nothing; this is external monitor which has connected to laptop; somthing in labtop should be problem; advice me plz;

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Start with seeing if it is a display problem.

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http://en.wikipedia.org/wiki/VGA_connector

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Press the Fn key down, and at the same time tap once on the Display Toggle-Over key.

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No display on external VGA monitor? Hold the Fn key down again, and tap once more on the Display Toggle-Over key.

If no display shows on the external VGA monitor you have a bad graphics chipset. Motherboard replacement.

If a display does show on the external VGA monitor, you have a problem with the Video Cable, and/or in the Display Assembly.

Post back with the results, after using an external VGA monitor, in a Comment.

Regards,
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