I created a VM a while ago for testing things in a safe sandbox. It's nothing fancy, just a Win10 installation in VirtualBox. I fired it up the other day for the first time since I upgraded my system, ...
Restart the computer, and while it is starting back up, press the BIOS key (this is usually one of the F2, F10, F12, or Delete keys). Once in the BIOS, look for options like Intel VT-x, AMD-V, or ...
If you fail to enable nested virtualization or the Enable Nested VT-x/AMD-V option is grayed out in VirtualBox, here is how you fix the problem in Windows 11/10 PC ...