Hello KattheKonqueror, this issue could be caused by a problem on the system registry.
In order to resolve it would be necessary to check if you can restore your computer to the last working state by choosing “System Restore” once you’re in Windows.
Then, uninstall the graphic drivers and install them again
I appreciate your help, but my computer says it could not complete the system restore. Also I can't uninstall and reinstall the graphics drivers because I can't find any that are compatible with my computer.
In this case I would recommend you to contact Toshiba so they can guide you finding the correct drivers.