gekko

Vista 64ultimate did the same to my computer. Same exact issue except i tried PS2 mouse, i tried USB mouse with wire made by MSFT, tried wireless mouse with USB by MSFT also treid USB Bluetooth Wireless mouse by MSFT.

I tried Trackball mouse by Msft.
and lastly tried Logitech mouse.

In every single case, from ps2 to USB to Bluetooth, none of the devices work.

I then did a system restore to get back to prior to the update, and reinstall the update. Repeat this process 3times and getting the identical problem.

At the end, i select do not automatically update, and roll back with system restore and stayed away from this last update which is a complete flop.