Hello,
The reason you are getting the error "computer does not meet minimal reqs" when you try to install the Intel graphics driver is because switchable graphics is build to work only with the system manufacturer drivers, since our graphics drivers are generic and is only to work with systems using the Intel graphics controllers. Basically you must only use the drivers provided by Toshiba from the link below:
http://www.intel.com/support/oems.htm
For more information regarding switchable graphics go to the following URL:
http://www.intel.com/support/graphics/sb/CS-031103.htm
Regards,
Michael