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Problem: Tried to install a new virtual machine on my Dell PowerEdge R310 server running Windows Server 2008 R2. Got an error saying it could not start my virtual machine because hypervisor was not running.
Solution: Power down the server completely. Power it back on and hit F2 to get into the bios settings. Go to processor settings and set the â€œVirtualization Technologyâ€ setting to enabled.