Please see HP Notebook PCs - Notebook Keyboard Troubleshooting (Windows 10, 8) for assistance with your issue. Also, as the keyboard is wireless Bluetooth, you may wish to check Bluetooth settings to ensure that the keyboard is detected/conected to the laptop. Please see the following for more assistance;
Bluetooth Keyboard Cannot Be Used During System Boot
Keyboard does not work after pairing with computer
Cannot Electronically Connect Bluetooth Keyboard Base to Computer
If you have any further questions, please don't hesitate to ask.
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