[android] Error during installing HAXM, VT-X not working

I had the same issue. Enabling the Data Execution Prevention for all programs and services helped. I tried using the method Alex suggested above -

Go to MyPC / right click / Advanced System Settings / Advanced / In Performance click SETTINGS / Data Execution Prevention and enable DEP for all programs and services.

But I found the Data Execution Prevention page was all disabled and said "To use these settings, you must be a computer administrator and you must use the bcdedit.exe file."

This site explains how to enable DEP from cmd. http://www.thewindowsclub.com/disable-data-execution-prevention