Unable to start Genymotion virtual device, incompatible CPU

You need to turn virtualization on.

1. Reboot the notebook.
2. Instantly press F10 to enter BIOS settings (or F2 depending on your PC)
3. Check the settings and look for Intel Virtualization Technology (Aliases: Intel VT-x).
4. Turn it on then save and exit. You could use F10 to save and exit.

This will enable you to use virtualization and enable VirtualBox. Therefore your emulator will hopefully work.

I've solved my problem just turning off the Hyper-V on Windows Features.

Another way to receive this message is because you are running another application that use VT-x like the Android Emulator from Android Studio. If you open Virtualbox and try to start the VM you will get this error message. Solution: Close the other emulator and try again.