I lost my resolution...it's currently running at 640x480 and 16bit color. My computer diagnostic says I have a Matrox Video Adapter - Matrox G450. I went to their website and downloaded and installed the latest new drivers. My computer is not acknowledging the matrox video card and instead is loading a basic video driver which gives me the low resolution...I can't change the size and only have 16bit or 2 color. I have gone to device manager and deleted the basic adapter and tried to install the Matrox but when the computer tries to use it I get a garbled screen. Am I missing something else?