2nd monitor black border

Hi everyone, I have two monitors connected to my computer. I'm running a gtx 660 and the resolution on my 2nd monitor is off. It has a black border around it and I have tried adjusting it with the option on my Nivida control panel. My first monitor resolution is set at 1920x1200 (HDMI) and the 2nd one is by 1360x768 (VGA) its a 19 inch LCD. On the control panel I went to adjust desktop resolution and select the 2nd monitor. Then I click on the position option and tried to adjusted.

Can anyone help me?

Thank you,

have a look in the monitor settings to see if overscan is turned on or off - whichever it is, change that setting and see if that fixes it.