New member and HP Envy x360 driver problem

[Brightnoise]

New member. After a search I did not find a solution for my problem on this forum. May be I did oversee a similar question and answer. May be it is unique; that's why I try it here.

The HP Envy x360 convertible 15-bp130nd screen was cracked by my grandson. I replaced the screen with a screen without touch function. The screen is now working OK and so far I am happy with the computer. Now the problem:

The keypad and mousepad hardware are working, and so it is not a hardware problem. In the BIOS I can use keypad and mousepad. And also when booting from a Win_PE usb stick. No hardware problem is my conclusion.

In Windows 10 (home edition) the mousepad and keypad are NOT working. I can only use the laptop with an external USB keyboard and USB mouse. Without limitation. But it is impossible to get the internal keypad and mouse to work.

So it must be a driver problem in Windows. I think, but there are probably more fault causes.

Also turning the laptop upside down, rotation or whatever, does not alter that non-functionality (gyro (?), tilt/gravity or magnetic sensor).

Windows problem solver returns with "no errors" for mouse and keypad. In the device manager I see that the I2C HID function has an error. It says, when looking in the details: "service can not be started" and also "power failure for HID device".

Since I changed the screen to a version without touch function I did some further investigations like "switch of tablet function" and also driver update for all the HID functions. And at the end: reinstall Windows from scratch. It didn't solve the problem.

Now I am out of ideas. Hardware is working and apparently Windows and/or HP do not allow to switch-off the HID functionality.

I tried to override with a generic Synaptics driver for keypad and mousepad, but that is not accepted by Windows.....

Disabling ISS (two times in device manager) and restart does not solve the problem.

So how to get rid of that overtaking HID software that blocks acces to keypad and mouse? I am one-of-many(*)  victims with an Envy x360 that want to have control over that function.

(*) Based on a Google query for these terms.

Query on Google: "hp x360 keyboard and touchpad not working"

Can someone help me with a registry fix or tell me what I did wrong? (Yes, I know: an original screen....).

Brightnoise, F Sessink, PA0FSB

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Added on Jan 20:

file i8042prt.sys is probably related to the problem. I do not know what the registry settings do.

[Brightnoise · Accepted solution]

After 15 hours of deduction I found the culprit. It is the Intel ISS application. Delete the app and the problem is solved. The software starts default in a mode where the keyboard and mousepad are disabled; without touch screen functionality it can't be modified.

And when you have a x360: check the video driver or drivers. Both Intel and NVIDIA try to control the screen. Disable one and check in hardware system ("apparaatbeheer" in Dutch) that it does not install again after restart.