If you have problem with the accelerator for Virtual Devices try this:
- go to Android SDK normal "C:\Users\USERMAME\AppData\Local\Android\sdk" (replace USERMAME with your windows username)
- then go to the folder folder "extras\intel\Hardware_Accelerated_Execution_Manager"
- finaly run program intelhaxm-android.exe
More about the accelerator to be find here:
More about problems and how to set up your PC for virtualisation.