I had the same problem too. Today (13-11-17) I decided this.
These are the steps to solve the problem -
1) Go to Android Studio Settings.
2) Appearance and behavior → System Settings → Android SDK.
3) Copy the location path of the Android SDK.
4) Go to the path.
5) In the path folder, open the "Advanced" folder, then open "intel", then open "Hardware_Accelerated_Execution_Manager"
6) Double-click on IntelHAXM_ [version number here].
7) Reinstall IntelHAXM.
8) Open the emulator.
It should work fine (it worked for me)
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