Hardware vendors perform OEM activation by associating the OS to the firmware (basic input/output system, or BIOS) of the computer prior to shipping, so if when I get my new pc turned on and running with my programs and I decide to delete Win8 and do an install of Win7, what happens, if anything, with 7 and the BIOS? Doesn't Win7 also set up its own parameters to the BIOS just like Win8? Isn't that doable?