Windows 7: Dark monitor geforce GT440(after going to desktop with dark wallpaper)

Hello guys,



i have one simple problem and would like if somebody can help me.
Yesterday i bought new grafic card geforce GT440 after my old 9800 GT stoped functioning normaly(memory failure).
So here is the problem, when I start any program or do anything the computer the computer is functioning normally, but when I turn to desktop(which has black wallpaper) the monitor goes so dark that I can't see almost nothing. I tryed to find some power saving options in windows(win 7 pro, 64 bit) and on envidia control panel but i cannot find any cause for that dark screen. Even if I load a black page on my mozilla the monitor goes dark. As it cannot represent dark colors normally. Thanks in andvance for Your help.

Greetings from Croatia,
Martin König

First update your driver by choosing the correct model HERE.....

Thank You for a quick replay. I installed this driver NVIDIA DRIVERS 285.62 WHQL yesterday and the same thing happend. So please help with something else.

Can you provide us some screenshots?

It was nothing with my graphic card, I accidentaly changed my monitor settings. Sorry for Your time guys and thank for Your effort.
Have a nice day, Martin