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1. Turn Off Monitor by pressing power button on LCD 2. Shut down computer 3.
Unplug power cable from LCD, Once power cable is unplugged from LCD,
press and hold down the power button on LCD for 15 seconds
4. Unplug the power cable from the back of Desktop Computer and Hold down the power button on desktop computer for 15 seconds
5. Plug the power cables back into the LCD and Desktop Computer
6. Power on computer and then power on LCD, it should work
First place to look will be the power supply section, look for bad caps (bulging tops or bottom seals), the post back what you see so we can guide you further for direction such as voltage checking, see example of failed monitors due to bead caps: http://s807.photobucket.com/home/budm/allalbums
This indicates either a problem with the monitor cable(ie shorted) or the display adapter. Try plugging the monitor into a different computer and if it works you will need to install a new display adapter in your computer. If it doewn't work on the new one either you can try a different monitor cable if yours isn't permanently connected. Hope this helps