Chasing Users to turn on their PCs

Many of you have users that just never seem to have their computers on? We're about to mass rollout the January updates, so I'm just doing the usual routine of just making sure as many are ready, using our own internal tracking app (Lansweeper) and a fancy dashboard provided by our parent company using data combined from Intune and regular Nessus scans. We have a mix of remote and in-office users, some with secondary machines, and a large number of production-floor computers. The secondary machines I can understand, and some of the production PCs don't see constant use and so may not have been turned back on after a power outage, etc. But I'll occasionally find a user, usually remote, but sometimes not, that hasn't checked into Intune or our Lansweeper in a few months with their only PC. I'm like, 'what have you been doing?' Admittedly some are just outdated inventory data, but I seem to have 'caught' some... well I'm not gonna label or rat on them. That's between them, their team and their manager. Just, please, keep your computer on.