First of all, ensure that you've enabled the 'Virtualization' in your BIOS setup.
Start the Android SDK Manager, select Extras and then select Intel Hardware Accelerated Execution Manager and wait until your download completes. If it still doesn't work, open your SDK folder and run
Follow the on-screen instructions to complete installation.
Or for OS X you can do it without onscreen prompts like this:
If your CPU does not support VT-x or SVM, you can not use x86-based Android images. Please use ARM-based images instead.
After installation completed, confirm that the virtualization driver is operating correctly by opening a command prompt window and running the following command:
sc query intelhaxm
To run an x86-based emulator with VM acceleration:
If you are running the emulator from the command line, just specify an x86-based AVD:
emulator -avd <avd_name>
If you follow all the steps mentioned above correctly, then surely you should be able to see your AVD with HAXM coming up normally.