Bright Screen, very little contrast or color...

Question

Went to mount the screen on the wall, and also had a problem shaking the screws out of the base mount. After mounting and leveling the screen on the wall it seems like the lamp is in front of the LCD's instead of behind it. When I pushed on the bezel corner to tilt it the wall mount, it restored the the image for a few days the way its supposed to look. Now its back to the same look. It seems as if the brightnees is turn up all the way.