Widi has been restricted by Intel to only run on Intel's chain of command. ie: Intel - graphics, wifi, chipset. On my Sony Vaio, which also has switchable graphics (Intel + AMD), I have to keep the switch at "stamina" (or intel) for widi to install or even start. It cannot be run with the discrete graphics card. (that's when it popups the message about requirements)
so if possible, make sure your laptop is currently running on the integrated intel graphics card. You may have a simple switch on the laptop, or you may have to do some things in the bios.