So this issue started occurring in early October of 2018 and I've had this ENVY for a little over a year.
The issue is that my Synaptics SMBus TouchPad is not responding.
I have the animated tray icon in my taskbar and there is a red X over it.
In ClickPad Settings under Mouse Properties ClickPad is enabled. (I've tried double-tapping the top left corner of the touchpad as well)
In General under Synaptics SMBus TouchPad Properties, it states that "This device is working properly." And under Hardware it still says that message for "Device status" and says that it's "Location" is "plugged into PS/2 mouse port"
The driver version is 19.3.31.31 and when I check for driver updates there are none available
I have previously rolled back the driver to a driver I forget the name of (but it was not Synaptics) however two-finger scrolling did not work so after a month I decided to uninstall it and have my computer return to Synaptics.
When I did return back to Synaptics my touchpad did respond but once I hibernated my computer it stopped working again (I have tried shutting it down as well to no avail)
In Manage profile settings under ClickPad Profiles under Mouse Properties, The only text is "Description" and right below that is "<new>" I assume that that's there by default. I've tried making a profile and nothing changed (not sure why I thought making one would have changed things)
I've also reset devices and the "Disable internal pointing device when external USB pointing device is attached" is not checked. (I've check-marked the box and disconnecting my mouse to see if things would change but nope)
My task manager used to show that the touchpad was taking up CPU when I moved my finger around (though it did not move the cursor) the pad but no longer does.
I do have an HID-compliant mouse driver (for my Logitech mouse) and have tried using the TouchPad without it connected but still no response. Luckily my mouse does work otherwise I would have to completely just use the touchscreen.
Also, I don't know if this is in anyway related to the issue at hand but when I fold my ENVY to activate tablet mode it doesn't. This issue occurred around the same time as the TouchPad issue which is the only reason I bring it up.
Hopefully, this is enough information to assist me in fixing my touchpad (probably too much 😅) but if you need more information feel free to ask.