The video card is a ATI Raedon HD6370. The driver that we are using is the curreont 8.743.2.5 driver from the HP web site. The video card software Catalyst is has an option to set the color for the adapter which we set to 16bit. However the monitor still only has the 32bit True color option. We may try a DVI cable to see if changing the cable type may help. The manual states that the monitor will support 16bit true color.