Hi Ange,
Thank you for posting and sharing your troubleshooting steps. We sorry to hear the problem you are getting on your laptop. May i know the exact model of your laptop?. When did you bought this laptop?.
Please check if the Escape button is also not working using on screen keyboard on your laptop. To use the on screen keyboard click start button then type On-screen keyboard. Try to reconnect your external keyboard to another USB port on your laptop.
Please don’t hesitate to reach out for further clarification.
Regards,
Jansher