I bought a graphics card that was based off of nvidia's 9600 gt processor. tried to install driver from Nvidia's website and received and error code stating "source is invalid would you like to continue?" I then click yes and it seemed to install fine from then on but after I restart the machine not a single part of the driver installed, making the card useless. I went through this process 5 times does anyone know what the problem is? any info would be apprecited