Question about Computers & Internet
Some dell monitors have dual input; thats VGA and DVI. Make sure the input you are using is what you have selected, and that the cables are secured to the pc and monitor.
Also, make sure your video card driver has support for dual output. You may need to contact the manufacturer of the video card and get a newer driver, and update your direct x stuff as well. If the card has support for multiple outputs, but you cannot detect them, it is MOST likely the driver, but check your cable connections as mentioned earlier, just to be sure.
Posted on Nov 16, 2009
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Posted on Jan 02, 2017
Tips for a great answer:
a flashlight on the dark screen to see if you barely see 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 be any kind of monitor even the old big fat crt monitors as long as it has a vga cable to connect to your computer's vga port. If the video shows on the external monitor that proves your video card is ok, ,but your lcd screen is bad. The video will show on most systems when you reboot without 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 correct key for displaying on the monitor (F1 thru F12). The correct key will normally have CRT/LCD on it or it will have the icon of a display.
If you see no icons by shinning a flash light and the external monitor works, then your screen is bad. If you see no icons by shinning the flash light and nothing shows on the external monitor, then most likely your video card is bad.
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