The video card tends to go out on these. Replacing the motherboard is the main solution to that, though there is also success with heating the motherboard so that the solder connecting the card to the board will reflow and make the connection again...
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== Update ==
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...and when that is the problem, there will be nothing showing up on an external display, either..
The video card tends to go out on these. Replacing the motherboard is the main solution to that, though there is also success with heating the motherboard so that the solder connecting the card to the board will reflow and make the connection again...