G237hl monitor, control buttons do not allow me to adjust horizontal and vertical size.

lotsip
lotsip Member Posts: 2 New User

In windows 7 I can't increase horizontal and vertical size.  The monitor controls do not allow me to adjust, they are greyed out. I have large black spaces of wasted monitor space. I can't use the VGA input connector on the monitor, only HDMI available on my video card.  Is there a specific monitor driver to rectify this issue ?