Laptop OEMs (especially) are known for tweaking chips and drivers. So never be surprised if you get a driver elsewhere that does not work. Best to get it from the computer OEM - not the chip supplier. Toshiba is known to offer new drivers only when there are bugs in the existing ones. So don't expect them to arrive often. Try using the [http://www.intel.com/content/www/us/en/support/boards-and-kits/000006291.html|device manager approach] described by Intel.