In general the answer is "it's not worth your time"
Since the HP Touchsmart (not smarttouch) motherboards have a custom BIOS on them that will only accept graphics cards with a GPU firmware that they "like"

The page you link to really doesn't enter in to the discussion.

wildyorkie said: Diane, you state that the webpage I linked to does not enter the discussion. However, HP has labeled this webpage on BIOIS setup at the upper left as applicable to a TouchSmart. Regardless, HP's webpages for appliacable to to various TouchSmarts indicate that the user can use the BIOS setup or other setup utiliities to change the factory defaults for devices. For example, the HP webpage at: http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&t... which is applicable to the setup utility for the TouchSmart 9300, states: Use Computer Setup (F10) Utility to do the following: > Change factory default settings. > Set, view, change, or verify the system configuration, including settings for processor, graphics, memory, audio, storage, communications, and input devices. Therefore, is it true that users can change factory defaults to install a third party device?

Except the items you are talking about on that BIOS setup page have absolutely zero, zilch, nada, zip to do with the issues in upgrading the graphics card. You're barking up the completely wrong tree, and that's why I said what I said and stand by it.

You can feel free to read the many MANY previous discussions on this board and HP where everyone reaches the same conclusion, upgrading the graphics on a Touchsmart desktop is not worth it unless you have an actual HP MXM card from the same series of Touchsmart desktop unit because the BIOS won't boot with cards it doesn't like/consider ok, and the ONLY cards it considers ok are ones used in other Touchsmart sub-models of the same series. It's like this because HP has the motherboard and BIOS made to their specifications, they're not bought "off the shelf"