Unresponsive Touchpad on Stream 11

[Bluesman07]

Friends and Experts,

I have a Stream 11 (Serial [edit], Product K3N14UA#ABA) with an unresponsive touchpad. When on the desktop, or anywhere within the OS, the touchpad does not register movement or clicks from the left and right buttons. The Synaptics Touchpad does not show in the Device Manager, and I get the error message: "Unable to connect to the Synaptics Device Driver" when selecting "Additional Mouse Options" in the Settings for Mouses. In the "Properties" menu which appears when selecting "Additional Mouse Options", no Synaptics Touchpad tab exists, either. 

I've confirmed that the mousepad isn't broken - the touchpad works perfectly when in the "HP PC Hardware Diagnostics UEFI" and passes all tests run in the "component tests" menu, which leads me to believe the hardware functions normally. The touchpad is not "disabled" (I've tried hotkeys and the "double-tap" in the top left corner with no effect). I have tried un-installing and re-installing the suggested driver from HP's support site several times. I've tried installing it in compatability mode - with no luck. Un-installing and re-installing Windows has also failed to resolve the touchpad problem, and there are no Windows updates left to try. 

To me, this all seems like some kind of software issue, not a hardware one - but in my hours of research and trials, I have not come up with anything to resolve this strange problem, and I find that solutions that work for others does not for me... and HP's virtual assistant has no advice. 

I would be very grateful to get some advice and guidance! I love this PC and would love to keep it, but it's more expensive than it's worth to replace parts or get repairs done. 

Thank you all for your thoughts!

[kyle_b]

If you have not already: Reinstall the Intel Serial I/O chipset driver from hp.com.