Hi Сергей,
I'm Christine, a Windows user like you. Looks like your FN keys are no longer working after installing Windows update. No worries, I'll do my best to help you.
If you don't mind me asking have you tried to reach HP Support already regarding this?
Kindly try to follow the steps below:
Please try to press FN key + ESC at the same time and check if the issue persists.
You may try to press them twice and check any changes.
You may also check the link below o how to lock or unlock the FN key.
https://support.hp.com/us-en/document/ish_58783...
Please let me know the result. I'll be happy to assist you all the way until it's resolved.
Thank you,
Christine L
Independent Advisor
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