Re: The real solution
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A jumper block, just as with resetting BIOS, is perfect for this purpose.
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Unlike the BIOS which would normally only be updated or reset by technically competent users, drivers may well need to be routinely updated for computer illiterate users (e.g. to make the graphics card work correctly with the latest video games etc.). Having a mechanical jumper would require the user to be able to open the case and then locate and move the appropriate jumper (which would be in a different location on different motherboards).