If you have updated your other drivers for win7 via the methods described in teh various posts here, you need to reinstall the keyboard drivers. There are actually several drivers in that package. One for the keyboard and remote and the others for the OSD (onscreen display) and volume controls.
This may help you some: http://www.touchsmartcommunity.com/download/591/Keyboard-and-Hardware-Manager...
I had the same issue with my 816.
David
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Woohoo! I won my Touchsmart!
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