some keys work randomly

[pfil]

some keys ("o", ".") dont work till pressed repeatedly, then work normally for some time, then stop working (and on and on like that). Tried all tests (BIOS, Win10) and offered solutions (reinstall drivers, hard reset) short of keyboard replacement to no avail 

[sandytechy20]

@pfil

Welcome to HP support community.

Clean the keyboard with compressed air (blow compressed air in the gaps between keys). This removes some lint and dust.  

Shut down the laptop, remove the battery and cable for a moment, press and hold the start button for 60 seconds 

Replace the battery, restart the notebook, 

if the issue persists, change the keyboard layout and check if it works: Click here for steps. 

Also, run a hardware test to identify any issues with the keyboard: Click here for details (Interactive test) under component tests - keyboard. 

Let me know how it goes.

To thank me for my efforts to help you, please mark my post as an accepted solution so that it benefits several others.

Cheers.