Your laptop system must meet all the hardware and software requirements. Intel® My WiFi Technology (Intel® MWT) and Intel® Wireless Display must be pre-installed and enabled by the system manufacturer.
Unfortunately Intel(R) Wireless Display is not compatible with desktop platforms at this point. Intel® Wireless Display requires a compatible laptop, separate TV adapter (Such as Netgear* Push-2-TV Adapter), and a TV with HDMI or composite A/V input.
For more information, see the "Laptop to TV with Intel® Wireless Display (WiDi)" link below: