Upgrading my computer to issue windows 8.1

I'm on a bridge, I know it's a product from gateway acer is acer. Its a NE56R with windows 8... I wonder, why acer/Gateway recommends make what to delete the driver VGA before the update? My computer has an intel hd graphics current BIOS is 2.15 (he is a pretty good version to have a BIOS update to windows 8.1 hope)... But like what would happen if I update without removing the VGA Driver first thank you.

Using the Contol Panel, programs & features, uninstall...

Tags: Acer

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