Virtual machine could not start because the hypervisor is not running.

Ok so if you're not techy you can do the following:

1. Run cmd as admin and then paste this in
2. bcdedit /set hypervisorlaunchtype Auto

          then click enter.
     3. Then restart computer and your vm will work again.

This apparently has to be done every time your computer shuts down.


The long term fix is:
Cause

The Data Execution Prevention (DEP) setting is not enabled in BIOS. For HP server, it is called "No Execute Memory Protection"

Resolution

To fix the issue, enable the DEP setting in BIOS