http://blogs.technet.com/b/gmarchetti/archive/2008/12/07/turning-hyper-v-on-and-off.aspxI use hyper-v on my laptop. When I know I don't need VMs for the day, I can squeeze a bit more performance out of the machine by turning hyper-v off with: bcdedit /set hypervisorlaunchtype off and a reboot. To turn it back on: bcdedit /set hypervisorlaunchtypeen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.technet.com/b/gmarchetti/archive/2008/12/07/turning-hyper-v-on-and-off.aspx#3422280Mon, 18 Apr 2011 08:13:28 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3422280lugalzagesi<p>I receive the message: &nbsp;an error occurred while attempting to reference the specified entry. &nbsp;I did this from the command prompt installation disk. &nbsp;Thanks</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3422280" width="1" height="1">