Keyboard not working
 

My laptop keys keyboard stopped working but trackpad does. Found on screen keyboard is ok so device is useable.
its a ACER on Windows 10 about 6 years old
At the stage to uninstall Keyboard driver and re install.
Then reinstall Windows if that don't work
Anyone had similar? or other suggestion please

obviously it could a hardware issue

Strange it just stopped! Quick fix is to buy wireless keyboard if you dont fancy fiddling about

Have you tried simply rebooting? See if you can use the keys to access the BIOS. If you're feeling adventurous booting from a "live" Linux USB will tell you it's the keyboard or Windows.

Personally I think having a wired USB keyboard stashed in the cupboard along with a wired USB mouse are essential emergency tools for a laptop user.

Yellow exclamation mark by 'Keyboard' in Task Manager may give some indication.
Sounds like a faulty driver
However most laptop keyboards are not too difficult to remove so you could try reseating the connector - check your device's service manual