Enable VT-x to support Intel HAXM

Dell Vostro 3700

Guys

I would like to install the Intel HAXM in order to run Android x86 emulators.  The HAXM installer tells me the PC meets the requirements but Intel Virtualization Technology (VT-x) is not turned on.

I have updated the BIOS to the latest release.

I have [Enabled] Intel Virtualization Technology on the Advanced tab of the BIOS settings.

I have used the CCTKGUI utility to [Disable] and then re-[Enable] the Intel Virtualization Technology setting.

No go.  Any ideas how I might fix this?

Thanks