well, I could try to write down the keyboard commands I do to reset the graphics, then you can try them to see if that will work. Just alot of hoping that the key commands get entered right....Would definitely be a pain.
The other thing you could try is to reset the bios by finding the reset jumper, or pulling the battery out of the MB (unplug it first), then letting it sit for 10 seconds, then putting the battery back in and starting up. It should reset all settings so that you can use it.
Also, one question, where is it that you can't use graphics? inside windows or at anytime?