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The dark or black picture is caused by a failure in the back light power supply. The problem can be corrected by replacing a few parts called capacitors on the board. Replacing them will require a little soldering but anyone can do it. Here is a link to a page that shows what needs to be replaced.
Check whether the cable from the system to the screen is connected properly and there is not loose contact. Also take the system into BIOS and check whether the same issue is happening in the BIOS screen.Try a factory reset on the screen by pressing the OSD button on the screen.
Switchoff the screen and disconnect all teh cables including the powe cable and press and hold the power button for around 40 sec and now reconnect the cables and try to power up the screen
A red or pink coloration on the screen indicates bad backlight bulbs. They are just like standard fluorescent bulbs just much smaller. When they start failing they light up with a pink color and that will make the screen look pink or red. You can change them but it may not be worth the trouble. You can do a Google search for compact fluorescent tubes and check prices.
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bzinbby1, Hi, I think I know what's wrong. In fact I already know what's wrong! But I want you to do one test to let me know how bad it really is! Here is the test. I want you to reconnect your Proview to an already fully booted "KNOWN GOOD" pc with WIN DESKTOP showing. Then and only then power up the Proview and hold a good, bright flashlight 2 inches from the lcd screen after the screen goes to BLACK! Even though the screen appears BLACK, can you still see the WIN Desktop if you hold the flashlight at different angles???? Get back to me with results of test. I will then tell you what options are open to you as a consumer whose screen is now dark and lifeless. I'm louie12fix on fixya or lmistyrel@ aol.com