New hp laptop Keyboard drivers stop working after Configuration

[Bulus_19]

My New HP Elitebook 840 G6 Notebook laptop Keyboard deactivates itself, even when I ensure all my drivers are updated.

 I considered reinstalling the keyboard drivers in Device Manager, and it starts working, but immediately after my password is inputed (using the keyboard) and the system is fully ready, it stops working again. 

[BeemerBiker]

Windows is loading the wrong driver.  Boot into safe mode and see if you can restore your PC to when the keyboard was last working

First read this article about safe mode.
Skip down to 'Enter safe mode from outside windows'. If f11 does not get you into system recovery then try turning the power on and off three or more times in a row.

This video describes how to use a restore point.
Let me know if you need more help or if startup repair fails.

since this is a new system it might be easier to do a factory restore

HP is removing cloud recovery for system over 5 years old.
The actual wording is a limited time after the warranty expires
You may want to get a copy of the cloud recovery before it is too late.
Cloud recovery provides all the custom HP drivers.
Go to the below site and enter your product ID including the 3 characters after the # character
If you have cloud recovery you can restore your system using a 32gb flash.
It may take an hour or more to create the recovery USB.
https://d34z73bbtpzgej.cloudfront.net/
Alternately, download from the MS windows store
Click here for instructions.

Let me know what you find out.