When you create a UEFI virtual machine, you need to press a key to begin Windows installation. If you don’t press the key within a certain period of time, the virtual machine console will switch to UEFI. To avoid this problem, you can restart the installation process in one of the following ways: Type this command in the UEFI console: EFI: EFI\\BOOT\\BOOTX64 Reboot the virtual machine. When the installation process restarts, follow the installation invitation in the virtual machine console. When the invitation appears, press any key.