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I need to get virtual machine running. (I have windows 8 pro, hypervisor feature installed and checked virtualization settings in BIOS). I see hypervisor is not running message when I try to start a new VM. After bit of searching, I was instructed to set hypervisorlaunchtype to Auto.

When I tried to setup using bcdedit, I got the following error :

The boot configuration data store could not be opened.
The volume for a file has been externally altered so that the opened file is no longer valid.

Bit of history - I have windows 8 on dell inspiron 3520. I migrated my SATA HD to SSD (Disk copied using EZGigIV). I am using SSD as primary disk. I have no issues in booting.

I tried bootrec /rebuildallbcd. I got the following error :

A device attached to the system is not functioning

Please advice how to fix this problem.

share|improve this question
which bcdedit command have you use? – magicandre1981 Oct 23 '13 at 4:06
never know there are multiple bcdedit. I used the one in system32 and in recovery console – Lokeshwer Oct 23 '13 at 4:27
I mean the command line. What have you entered into the cmd? – magicandre1981 Oct 23 '13 at 17:06
bcdedit /set hypervisorlaunchtype auto – Lokeshwer Oct 24 '13 at 9:10
this should be the correct command: bcdedit /set {current} hypervisorlaunchtype auto – magicandre1981 Oct 24 '13 at 16:50

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