Update: You can download and check your device with another tool at https://slatstatuscheck.codeplex.com/ 

If Windows Phone 8 emulator doesn’t work on your computer, chances are that your computer doesn’t support SLAT, which is required by Windows Phone 8 emulator. You can download the free tool from Microsoft and check if it does or doesn’t. For more info on what is SLAT and how it works, read the blog post at How-To Geek.

The –v option shows virtualization-related features including support for second level address translation, which requires administrative rights on Intel systems. Note: Coreinfo must be run on a system without a hypervisor running for accurate results.

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Coreinfo is a command-line utility that shows you the mapping between logical processors and the physical processor, NUMA node, and socket on which they reside, as well as the cache’s assigned to each logical processor. It uses the Windows’ GetLogicalProcessorInformation function to obtain this information and prints it to the screen, representing a mapping to a logical processor with an asterisk e.g. ‘*’. Coreinfo is useful for gaining insight into the processor and cache topology of your system.