Hello CharlotteGuinea,
Welcome to the HP Forums! I hope you enjoy your experience!
I understand the cap locks light no longer works. On most notebooks, replacing and handling this light would have to be done by our engineers. This light is also a non-replaceable part, which means you can't be sent another one.
Please let me know if you have any other questions or concerns. Thanks for posting on the HP Forums. Have a great day!
Mario