Last year I had Docker briefly running on my Win10 machine, just long enough to verify it was working, then today I ran it and it said it can't run because of my BIOS settings. Is this surprising? Does this imply I changed my BIOS, possibly by accident, sometime in the last nine months? If I changed out my boot disk, might that have reset some BIOS settings?
@mcc Open Task Manager, go to the Performance tab, and check the text under CPU – one of the lines is Virtualisation, it should show as Enabled; if it isn't, go to your BIOS setup, and enable it (depending on your BIOS and CPU, it could be called "Virtualization", "VT-x", "SVM" or something similar; keep in mind that unless you use a big OEM machine [HP, Lenovo, Dell, …], BIOS upgrades will reset these settings, and most BIOSes [still] default to virtualisation disabled for whatever reason).