Why I encounter problems on screen resolution in Windows 7 64 bit?

I have problems on my new HP Pavilion P7 Series computer with HP S2031 monitor.
Every time I change my resolution to 1600×900 (factory resolution), it suddenly crashed and prompts me a message: “Input Signal out of Range.”
Another thing, every time I launch a game to my computer, the screen can’t go back to “normal” screen resolution. This is already the second time I encountered this problem.
What do you think is the problem? Just for additional information, I have Windows 7, a 64 bit factory installed to my computer.
