we bought a new Computer with a DH87MC-Motherboard and a i4770K Processor. As we tried to install HAXM (using Windows 7 Ultimate) a dialog popped up, that vt-x has to be enabled to use haxm. We did activate "Intel Virtualization Technology" in BIOS (0153) and did a cold start.
After the cold start HAXM still stopped installing with the Message that vt-x has to be enabled. Also other Tools (like Speccy or the Microsoft-Virtualization-Detection) showd, that vt-x is possible but not enabled. How can we enable vt-x? We really need HAXM (a intel software) to develop android applications, without HAXM it is far to slow.