keyboard keys b, n and caps lock not functioning

[neha2145]

my laptop keys b, n and caps lock and 7 is sometimes not working at the same time and after a long press, they start working. How do I know it is a hardware problem or software problem.

[A4Apollo · Accepted solution]

Hey there! @neha2145, 

1. Have you tried checking with an external keyboard does the issue persist?

2. Was there any liquid split on the Notebook Keyboard?

3. Is there any Dust settled on the Notebook Keyboard?

4. Are there any Keys which are fallen off / Any Keys which are loose?

Please share the product number of the PC to assist you better.

Also, restart your PC keep tapping the F11 key on your PC before the PC boots, you will see the recovery manager screen.

Open the command prompt from the list and check if all the keys on your PC are functioning correctly. If the keys don't function it is a hardware issue with the PC.

If all the keys function try the steps recommended below.

Turn off the computer and then restart it.
Press the Esc key repeatedly to see if a startup menu opens.
If a setup menu does not open, the integrated keyboard hardware is not working. The integrated keyboard in the notebook should be serviced or replaced. To continue using the notebook, connect a USB-wired keyboard to a USB port and restart the computer.
If a setup menu opens, use the arrow keys to navigate the menus. If these keys are working in the startup menu, but then fail when Windows loads, the problems might be related to the keyboard software.
Restart the computer.
In Device Manager, uninstall and reinstall the keyboard software:
In Windows, search for and open Device Manager.
Click View and select Show Hidden Devices.
Click the arrow next to Keyboards, right-click the keyboard device name, then select Uninstall to remove the device from Windows.
Continue removing device names in the Keyboards category until all device names have been uninstalled.
Restart the notebook. Right-click Start (), select Shut down or sign out, then select Restart.
Wait for the computer to restart and open Windows.

Also, Turn off Filter Keys

Filter Keys is a feature that is designed to ignore brief or repeated keystrokes, and according to users, this feature is turned on by default on their laptops, and that’s what’s causing the keyboard issue.

Go to Control Panel and open Ease of Access Center.
Scroll down and select Make the keyboard easier to use option.
Scroll down and locate Filter Keys option. Make sure that Turn on Filter Keys option is not checked.
After turning off this option, click Apply and OK to save changes.

Refer this article to know more information about keyboard issues with the PC. Click Here

If the issue still persists after trying out the steps. It is a hardware issue with the PC.

Please contact HP support for service options. Click Here

Let me know if this works!

Take Care! 🙂

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[neha2145]

Thanks for your kind reply. I have visited HP service center today and they suggest me to change the keyboard because after attaching external keyboard.. those keys are working perfectly. 

[A4Apollo]

@neha2145,

Thanks for the quick update.

As the external keyboard is functioning correctly, it certainly sounds like a hardware issue.

Also, as an alternative, you can use a wireless keyboard, if you don't like to spend much on the keyboard replacement.

Have a pleasant day ahead!

Take Care! 🙂