That is what happened in the event log:
Driver "hypervisor" required for virtual machine management service is not installed or is disabled. Check the settings and try reinstalling the role of Hyper-V.
Failed to start Hyper-V; incompatible processor configuration CPUID leaf D XSAVE (state 0x4).
А solution was found on the forums:
http://kunaludapi.blogspot.in/2012/05/get-hyperv-working-in-vmware.html
Solutions – to perform a command prompt:
bcdedit /set xsavedisable 1
Either install the update:
http://support.microsoft.com/kb/2568088
I execute the command line after the problem was solved.