Had my P10 for quite a few years and I’ve had this issue at least twice now, once a couple of years ago.
The P10 is usually kept powered on unless I go away for a few days.
Just back this morning and powering up my P10 it’s been on the Initialisation stage for at least twenty minutes now.
I can’t remember how I cleared the issue a couple of years ago. I sought assistance from the UK distributor, Kevin, and between us we got it cleared.
I have switched it off and on other times between then and now, but it’s come back online again ok without any issues.
Raised this to see what PS Audio says?