Correction: I meant PC #1 in this post's title
A few mornings ago, the PC would not awake. A cold boot would not work. Neither would booting from a DVD. Could not get into the BIOS. Nada. Could not not even see what was happening on the monitor. Kept trying stuff, and I think what finally worked was turning off the machine, unplugging the power cord, depressing the power on button, and then plugging the power cord back in and powering it up. The only update I saw that had installed was Windows Defender. I can't think of anything else done to the PC in the 24 hours preceding the problem. I ran powercfg -energy. The results did not mean anything to me, but I have attached them. Everything has been fine since.