Stilly River Sage wrote: ... twice in the last week I've come in after the computer was supposed to sleep and when I jostle the mouse ... the main [monitor] has a blue screen with a message and a QR code to link to the topic. The message beside the code says Stop Code: Faulty Hardware Corrupted Page.

I'd guess that's a fault in the 'resume from hibernated' (S4) state. To test that you could change the power settings to only sleep (S3) for a week or two and see if it still happens.

I found some support threads about similar problems appearing with release 1903 on some makes of computer.