New Lenovo laptop. Win 10. Win + P lets me select correct mode but doesn't make HDMI out work.
From a google search, this has happened on different types of computers. I've reset to the factory settings and uninstalled the Sling TV application. BTW, I don't get OTA TV and I cut the cord with Direct TV (200 stations of crap). Now I only have 30 channels of crap for $20 if I keep Sling. On a 7 day free trial now. Not impressed).
Anyway, if any of you have had HDMI out problems (TV says no signal), weigh in with your fix.