LCD TV with playing computer games did not signal

I bought a new TV 32 of the LG LCD TV, vga connection, cs, and Call of Duty series can play, but the Prince of Persia and the play Hongjing will not be able to open after the show did not signal, do not know what an expert for some advice.Thank you, and I set to 4:3 screen, a 16:9 to enter the game becomes a

according to the official website of the game That you tune-resolution LCD TV s on there is a button on the automatic adjustment ~ ~ ~ is also invited to advertise, you do not have to say that they know bad things LG, LCD ghosting multi-level sense of well ~ ~ ~ ~ This is the week of the public.