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If you get the message “This computer does not meet the minimum requirements for installing the software” it means that you system does not support our generic driver and it needs a customized driver from your system manufacturer. You should be able to get the proper drivers for your system from the Toshiba website, you can try this one:
NOTE: This link is being offered for your convenience and should not be viewed as an endorsement by Intel of the content, products, or services offered there.
In order to use only the integrated graphics you should be able to set it up in the BIOS, at this point I suggest contacting Toshiba for you to set that in the correct way as they are more familiar with your BIOS and your entire system configuration.