long time lurker first post lol short version: ATI Graphics Driver wont install.

Windows Update
We couldn't complete the updates.
Undoing changes. Don't turn off your computer.
Error code: 0x800f0922
longer version: my home-built tower came with a manufacturer-customized graphics driver. i wanted the newer one from ASUS directly. every installer i try says its incompatible with my Windows. is the laptop maker locking this down, or is my Windows install broken? i would really prefer not to reinstall Windows just to update one driver. if there is a way to check what the installer is actually comparing, i would love to know it. thx in advance!!