I have an HP ProBook 6550b laptop and I recently installed Windows 8. After updating the Synaptics driver, I noticed that my OS eventually reverts to a pre-Windows 8 driver without asking me.
New driver

Old driver

Any idea as to why the Synaptics driver would automatically revert to an old pre-Windows 8 version? I don't remember what the default driver was.
Edit: I found the culprit. It's coming from the inside: Windows Update. How can I prevent Windows Update from installing the old driver every time I roll back to the 2012 version?
