Quite a while back, my Windows 10 PC installed malware updates mandated by Microsoft, and it subsequently failed to resume from S3 sleep, for reasons which I did not have the time to investigate. I skirted the issue by disabling S3 sleep in BIOS, leaving only S1 sleep states available, which still worked…
About a week or two back, I started realising that my computer would not go to sleep at all…
I needed to find the root cause and cure its insomnia; something was preventing Windows from going to sleep…