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Computer runs normal except for black screen ;but when i attach it to my tv i can see the screen display

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Your lcd is caput...................
buy second hand 1 from ebay.
can be swaped in matter of 20 mins...........
cheers

Posted on Mar 27, 2011

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Posted on Jan 02, 2017

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  2. Disconnect all devices from the computer except the original mouse, monitor, and keyboard. Leave the power cord connected.
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    Hi, I have a T400 and when I trun it on the Thinkpad black screen appears and does not change. Please can you help


    Does it seem like the laptop is running except the display is black? Do you think it booted all the way except the screen is black? Do you hear fans running, disk drive spinning?

    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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    Its quite possible your laptop has lost its association with your TV as a "secondy monitor".

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