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When laptop is powered up, nothing shows on screen. I can here the audio intro but no display. Model is: MT3421

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Try connecting an external monitor and see if it displays, if it displays OK you might have a problem with your inverter circuit or the back light of you laptop's LCD. If so you have to bring it to the repair shop. cheers.

Posted on Nov 10, 2008

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1 Answer

Power on, but nothing displayed


You are not giving enough info.
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I will assume it is powering on and booting up, but you don't see anything on the lcd screen.

Shine a flashlight on the dark screen to see if you barelysee the icons on the desktop. If so, then the LCD Inverter is bad.

Plug in an external monitor and see if the display shows up on it. It can beany kind of monitor even the old big fat crt monitors as long as it has a vgacable to connect to your computer's vga port. If so that proves yourvideo card is ok. The video will show on most systems when you rebootwithout you having to do anything. Some systems will require you to hit the FN(Function key) + F1 thru F12. Hold down the FN key then hit the correctkey for displaying on the monitor (F1 thru F12). The correct key willnormally have CRT/LCD on it or it will have the icon of a display.

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