ACPI Shutdown and Windows 7 or Vista
By Fat Bloke on Nov 27, 2009
A little something that had me scratching my head for a while and may save others some time....
When you try to close the window of a VirtualBox virtual machine session, a dialog pops up thus:
In the past, the "Send the Shutdown signal" has sent a Powerdown message which caused Windows XP vm's to gracefully shutdown.
But on Windows 7 vm's, the default Power Options when installed on a laptop are undefined:
So to get the previous behaviour you need to change the Power Options as follows:
Hope this saves someone some time.