I have 2 separate PC's that show the same issue, Lightroom worked perfectly fine on Windows 7 as well as Windows 8. I installed Lightroom on Windows 10 and it worked the first time, but now it will not launch at all. I double click the icon several times and nothing happens. I have 2 computers showing the signs and one of which if I click the icon a ton of times it eventually will launch. I had the catalog issue I've seen on the boards before but I got it resolved with another PC. I'm on an i7 & Nvidia GPU and shouldn't be having these issues, all other creative apps work fine (Photoshop, Illustrator, Premiere, etc).
Moved to Lightroom forum.