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Black screen have tried changing outputs but still black screen.

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Check for loose video connectors, power cables (of your monitor). Also try to turn off your computer by pressing and holding the power button. (you know your computer is off if it doesn't make any sound or vibration)
if all else fails, power up your computer and listen for a tone/beep sound. If there is a long beep sound probably your memory (RAM) is loose, defective or faulty. If you hear a tone/beep in a patern (like long-short-long, or any other pattern) then probably your VIDEO CARD is loose, defective or faulty.

Posted on Aug 01, 2008

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keep in mind that if your are not connected to TV, Graphics Properties don't show TV as an option. So, that was very confusing for me, as I saw similar solution somewhere but was not able to find NTSC_M settings on my laptop
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1 Answer

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Try a different monitor first and see if you have the same problem

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