Hi i have a laptop wich is a toshibasatellite pro 4200 series it is an old model and has bin rebuilt by an old friend and has none of the stuff that it had in when it was standard i have taken it apart and scanned the full motherboard for traces of make model and cant find nothink is there a driver that covers all video devices
This may help you determin the make and or model of your graphics card. http://www.belarc.com/free_download.html
One other thought, If you have xp, you might be able to go to device manager and uninstall your video and on reboot xp should install a driver. maybe