Monitor keeps going dark

[vegasgmc]

I have an AOC 27" LCD. Its worked perfectly until this week. When I'm gaming and go into an area or room where the ambient light is low the image will go almost black. If I back out of the area it goes back to normal. When I'm playing a DVD and a night scene comes up the screen goes black. When I start up or shut down the PC, the screen image is so dim I can't see the POST screen or Windows shutdown. Picture goes normal at the desktop. I use an HDMI cable and switched to DVI and VGA with same results. It also acts the same when connected to 2 different computers. Thanks

 

[Cobalt006]

Had the same problem with mine. Check your monitors settings . Some eco settings. make sure their not on.