Question about Computers & Internet
If the display shows on the external monitor then the problem is the LCD display not the in-built video graphic card. I hope this answers your question. Thank you and regards.
Posted on Sep 01, 2010
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Posted on Jan 02, 2017
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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.
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