keyboard keys not working

[player2entered]

My b,n,=, and volume up do not work. I've looked online for all possible solutions running diagnostics, restoring previous versions of windows, cleaning under the keys and nothing is working. From time to time they will all work for a few days and stop working again. What I have found is that keyboard replacements might work.   I'm not sure if its hardware or software since it's only those specific ones and they all start working out of nowhere perfectly sometimes. 

[Echo_Lake]

@player2entered
Thank you for posting on the HP Support Community.

Let's test the keyboard hardware by running the PC Hardware Diagnostic.

Use the following steps to open the Component Tests menu.

1. Hold the power button for at least five seconds to turn off the computer.

2. Turn on the computer and immediately press Esc repeatedly, about once every second. When the menu appears, press the F2 key.

3. On the main menu, click Component Tests.

4. The Component Tests menu displays.

   Your Component Tests menu might be different, depending on the components installed on your computer.

   

Hope this helps! Keep me posted for further assistance.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.