Assuming you mean Guru Meditation, here is a pretty good explanation. What the heck is this Virtualbox Guru Meditation error about? - fixedByVonnie In a nut shell it means VirtualBox hit a bug and is in debug mode. You can let the VM continue to run or close it. With a VM that shows Guru Meditation as a state, running VboxManage as follows normally clears it. VBoxManage controlvm <uuid|vmname> poweroff On some systems it's vboxmanage.
