I followed everything in this link
http://ionicframework.com/docs/guide/installation.html
and I installed Genymotion
in Android Studio
... But I\'
I just installed "Intel x86 Emulator Accelerator (HAXM installer)" in Android Studio
Tools > Android SDK Manager > SDK Tools
In my case, I had Intel x86 Emulator Accelerator (HAXM installer) already installed with a check mark next to it and everything, but I still received that error.
So I then decided to uninstall the Intel x86 Emulator Accelerator (HAXM installer), close the SDK Manager, reopen the SDK Manager and then finally reinstall it again. Then it worked perfectly.