Thanks for the reply. I've tried to install via the first link, receiving a warning box stating "The driver being installed is not validated for this computer. Please obtain the appropriate driver from the computer manufacturer. Setup will exit".
I've run the checker on the second link, it says the drivers are up to date?
Finally I've looked at the manufacturers website (Toshiba) to see if there was anything on there regarding graphics card updates, unfortunately I couldn't find anything.