You can do this by searching for it on Cortana: The solution on this page may not be favorable for the guys out there who’s extra sensitive to security, as it includes disabling some powerful security features that come with Windows 10. The reason behind this strange error is due to Bluestacks falsely claiming that ‘Hyper-V is enabled’, when it actually means ‘Another hypervisor is running!’. If you’re using Windows 10, and you have no desire of playing a game with only 5 FPS, chances are that this solution could work for you.
I tried everything from disabling Hyper-V to uninstalling all other VM programs, but nothing worked. I was trying out the new Bluestacks 3N when this error shows up.