error: driver being installed is not validated for this computer

hey. i'm trying to update my intel(r) graphics media accelerator driver for mobile and i keep getting the following error message: the driver being installed is not validated for this computer. please obtain the appropriate driver from the computer's manufacturer. setup will now exit. the current version i have installed is and i'm trying to update to i got the driver update from intel's website. but the error's telling me to get that same driver from the computer manufacturer's website. but when i checked the website(TOSHIBA), they didn't have the driver i got from intel's website. i have a toshiba satellite L305-S5915 laptop with a windows vista home basic 32bit os. if there's some way i can bypass the error, or if there's some way i can get hold of toshiba's website to see if they can add the driver upgrade to their website as a supported upgrade, please let me know as to what i can do. thanks.

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