to TheBobcat - you should be able to "disable" the pci device in the device manager (control panel, system, hardware tab, device manager and then right click on pci device and select disable.
Windows update doesnt usually touch drivers, the only option that looks at missing devices is if you say yes to windows checking online when you install/update drivers. If you go update drivers instead of disable in device manager you should get the option to check online, it may be worth saying yes, doesnt always work but no harm in trying if you havent already