Hmm, I followed the instructions on that page, but I don't see any devices that are grayed out in Device Manager. If I show the hidden devices, there are quite a few listed under Non-Plug and Play Drivers - they have a gray diamond icon next to them, but their names aren't grayed out at all - are these the ones I should try removing? The only obvious devices that aren't quite right are all the ones listed under Other Devices with the yellow question mark icon.
Thanks!