If Virtualization keeps turning off when your system reboots, you need first to check if VT-d, or VT-x is enabled on your BIOS. If they are not enabled, do it and then turn on Virtualization. If doing ...

I daresay Windows 11 is a decent companion for your home lab journey ...

If VirtualBox stuck on Saving state, your machine is in the hung state. Kill the VM via the Command Prompt, disable Core ...