Question about Dell Dimension E520 PC Desktop
I am working on a Dell Demn 520 and the screen is black.I start the system the lights come on but i get nothing on the screen. I tried 3 different monitors, I replaced the Graphic card and I even took out the CMOS battery and the screen is black. The monitor does not even turn green when the computer turn on. I don't even get the bios screen to come on. Also I took out the mem. All i get with the mem out is the beep error code for no mem.
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Posted on Jan 02, 2017
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Shine 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 so that proves your video card is ok. 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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