If the problem persists even after following the AI Assist steps, follow the solutions published in this link by a Microsoft MVP;
https://www.winhelponline.com/blog/something-happened-pin-not-available-diagnostic-mode/
Disclaimer: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.