Question about Dell Latitude C640 Notebook
Sounds like you may have a bug, you could try re-ionstalling everything fresh, it may need a driver update. Check the funtcion keys. Sometimes you can turn up the screen contrast by holding the function key and hiiting the function key that looks like a white and black sun, Black is for darkewer, white is for brighter.
Also, ost laptops when on battery power, will auto dim to save battery power.
Posted on Feb 29, 2008
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Posted on Jan 02, 2017
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