Hello Sandra1966, thank you very much for joining the Intel community.
We always recommend customers to download and install the drivers provided by the system manufacture, since our drivers are generic drivers and sometimes these cannot be installed on other systems or the installation of them could overwrite their customizations and possibly change the functionality of the graphics.
These are the latest graphics drivers available for your processor, please try to install them Intel® Download Center
You can also try a BIOS update on your system.
In addition please check if the fans and heat sinks are clean, since this could be causing overheating
If the issue persists I would recommend you to contact Toshiba for additional troubleshooting.