I have a Lenovo Z510 laptop. I had the Alps touchpad driver installed from the Lenovo's driver page (Drivers and software - IdeaPad Z510 Notebook), however, I noticed multiple times that the driver would stop working and the touchpad would not be useable. I took me a while to notice because I always use a USB mouse instead of the touchpad mouse.

To fix the install, instead of reinstalling the driver from leonvo's website, I first Uninstalled the driver from the Device Manager, and I also selected the option "Delete the driver software for this device"...

After restart, Windows didn't reinstall the generic driver, nor was I seeing any error in the Device Manger. My touchpad driver is not showing up at all...

I reinstalled the driver from Lenovo's page. It says "installed successfully" however after reboot, the driver is still not present...

The touchpad driver is not showing in the device manager at all!! What do I do?