Awesome! This software solved this issue for me. I am running an Intel i7-3630QM on a Windows 8.1 64 laptop, and I had to enable Virtualization Technology in bios before the installer could finish. After I did that and installed intelhaxm, it works like a charm.
I also upgraded VirtualBox to 4.3.10 and installed VirtualBox Extension Pack https://www.virtualbox.org/wiki/Downloads
Using Genymotion 2.2.1 http://www28.zippyshare.com/v/8618662/file.html
So if the installer says vt-x is not available, check your bios setting and then try again
