In your other posting I found info that you have Satellite C650D -11K. You are right. GPU is not the best but with reduced game video settings I hope it should work pretty well.
As MasterG already wrote, to get it work again you must try to reinstall display driver. Latest version you can download from Toshiba support and download page -
http://eu.computers.toshiba-europe.com/innovation/download_drivers_bios.jsp
Remove preinstalled version, clean up registry, restart your notebook and install latest version for your notebook model.