combat arms help?

OK, Im not completely sure what is going on...
When I play online game such as Rune Scape or other games on other sites everything goes fine but, when I try to play Combat Arms its like my computer shuts down. As far as combat arms gets is to the log in screen. My computer is still on but the sound messes up and the screen goes to "no signal." I have made sure that everything is still plugged in like its supposed to be. I have re-installed my video card and drivers for it and motherboard but nothing seems to work.....

If you know how I might can fix this please help!!!!!


THANK YOU

Your screen resolution, check that if your screen is either too small or Combat Arms resolution is already and originally put at about a big reso like 1000+ x 500+.