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Some Toshiba laptops require customised drivers.
If the current version 220.127.116.1124 is the generic one from Intel then download build 4703 as ZIP version from Download Intel® Graphics Driver for Windows* [15.40]
Install the new driver via "have disk method" as described at:
(ignore prolog about MS surface)
Maybe you need to update your GeForce driver as well, latest version is 385.28