I just bought this PC but I am unable to get the black frame off my HDTV which i am using as the monitor. It has a NVidia 8400GS card iin it. There is an option in the nvidia control panel that says "resize my desktop" which appears to be the right solution for my issue but when I push it brings up a screen with a big arrow on it and I'm not sure what to do with it. The screen stays there until I press esc. Any help?