The cause of your problem is that your computer does not allow virtualization. In order to activate it, it is necessary to do the following:
It will open the following window:
You search for the Hyper-v option and activate it. The process will take a few minutes and it will ask you to restart the computer. Once it is restarted you can run the emulator without any problem:)
* If you have questions about what Hyper-v .
Good luck! : D