Assume that you have a Hyper-V host computer that is running Windows Server 2012 or Windows 8. After you enable the I/O verification option in Driver Verifier on the host computer, you cannot start virtual machines that are configured on the computer. Additionally, you receive the following error message on the host computer:
The Virtual Machine Management Service failed to start the virtual machine '%machine_name%' because one of the Hyper-V components is not running (Virtual machine ID <ID_of_the_VM>).
Additionally, the following error logs are logged under Applications and Services Logs/Microsoft/Windows/Hyper-V-VMMS/Admin
in Event Viewer: