I am having an identical issue. WIDI came installed on my Pavilion dv7 notebook pc. What is going on? I removed the wireless chip and reinstalled (I've replaced this with a new chip once already). I've gone to the intel drivers and downloads and updated everything available. I have uninstalled WIDI and installed with the oldest version possible. Current version installed on my computer will begin to launch but will abort immediately while flashing a notification window for a fraction of a second. Attempts to update from the website are met with results described by the originial poster.