HI,

1. Switch to Enable in BIOS the virtualization (VT-X)
    1.a. Here is a quick guide: 

2. Make sure you installed "Intel x86 Emulator Accelerator"
     2.a. If it's not installed, run SDK Manager as administrator and install it.
/images/forum/upload/2015-09-18/bf601b2b563d42087e66e3a9f8b0d6b1.PNG

3. Install "intelhaxm-android"
     3.a. Type in keyboard "Win key"+R (it will open a small window in the down left side) and write "%appdata% /images/forum/upload/2015-09-18/7bf4373cbabd96df0b146ebf19d28227.PNG 
     3.b. Click Backspace button
     3.c. Go to: Local -->Android -->sdk -->extras -->intel -->Hardware_Accelerated_Execution_Manager
     3.d. Run "intelhaxm-android.exe" and follow the installation process
            /images/forum/upload/2015-09-18/f60b444b10b159989d31aa7a9a69ef12.PNG

Now you can run ADV emulator.
/images/forum/upload/2015-09-18/4e76592453bccc188cbca27be84a1d35.PNG

Enjoy.