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Re: how to run monitor and projector same time
You need to hold down the FN key (located in the bottom left of your keyboard) and press the F4 key (I believe)
This will toggle between your LCD screen, your projector, and then both at the same time. Be patient, sometimes it takes a while for the picture to show up.
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These yellow specs are called artifacts, and they appear because the graphics card gets too hot. If cleaning out the dust didn't help, I guess there is something wrong with the cooling on the card. Maybe try booting with the case opened, to see if the fan on the graphics card does anything at all. (if it doesn't have a fan on it, you should try cleaning the dust out one more time. perhaps another fan in the system isn't functioning?) If the fan doesn't function, you'll have to either get another one or get a new graphcs card, unless you know someone who can try to repair it.
You would have to have a dual head video card (two monitor connections) or have two regular video cards, or use a VGA splitter. If you do it through a video card, once you have them installed, go into the settings tab on the display properties and it will show multiple monitors, simply click on the second one and check the box that says "extend my desktop..."
for installing the nvidia driver u must need the respective hardware put on to ur motherboard..ie nvidia internal graphics card......only then u can install it.... u cannot simply install it on xp..it ll surely as for some error messages