external keyboard suddenly doesn't work

[gdale805]

no error messages. recently added google back up and LG Bridge to back up phone

[Jeet_singh]

@gdale805,

Thank you for posting your query on HP Community,

Have you tried to run the test on the keyboard? Have you tried to use an external USB keyboard and check if that works. 

Perform a Hard reset on the PC: 

Many startup errors and other problems can be resolved by decreasing the amount of power stored in hardware components. Decreasing stored power is sometimes referred to as a "Hard Reset". Use the following steps to perform a hard reset on a computer:

1. If Windows is open, click Start and then Shutdown.

If Windows is not open and the computer has power, press and hold the power button on the computer until the computer shuts off.

2. With the power off, disconnect the power cord from the back of the computer.

3. With the power off and the power cord disconnected, press the power button on the computer for 5 seconds. The power light indicator on or near the power button might turn on briefly but then go out.

4. Reconnect the power cord and turn on the power.

Run Hardware and Devices Troubleshooter

Follow these steps to run Hardware and Devices troubleshooter:
1. Press Windows key + X key and select Control Panel.
2.  Type troubleshooting in search box and Select Troubleshooting.
3. Select View all on the top left corner.
4. Click Hardware and Devices.
5. Follow the on-screen instruction to run the troubleshooter.

If issue persists follow next Method.

Method 2: Uninstall and reinstall the driver
I suggest you to try uninstall the keyboard drivers check if it works for you.

Follow the steps to uninstall the keyboard drivers:
1. Press Windows Key + X key and click Device Manager.
2. Right-click on the keyboard device listed and click on ‘Uninstall’.
3. Restart the computer after its uninstalled. 

4. Once done, restart the computer and check if that works.

Alternatively, I would suggest here is to update the Bios and Chipset drivers either on your PC from our HP support website, using this link or download it using HP Support Assistant.

To download and install HP support assistant on your PC. It should automatically download and install the latest updates and drivers for your PC.

Refer this link to know how to use HP support assistant.

You may also refer to this support document for - HP Notebook PCs - Keyboard Troubleshooting (Windows)

Let me know how it goes for further assistance. 

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