The folllowing solution worked for me which I found buried on page 4 of another discussion which is not marked as a solution. I only found it by accident when using Google to search for a solution. Searching on Sky Forum first had not shown this solution.
I think that it would also help if Sky added this a something to check when you look a solution on their help pages, it would have saved a lot of time and effort, apart from frustration
theoldgoat wrote:Thought I should post in here as I've just fixed this on my computer using a fix I haven't seen anywhere else, for Windows 10. Sorry if I'm breaking "forums rules" resurrecting an older thread...
Right click Windows button, select Device Manager. Under Monitors, make sure your monitors are enabled. If there is a downwards pointing arrow they are disabled. Right click and choose Enable if there is an arrow.
No idea how this happened to my monitors, they work fine so it's not something I expected to have to check. After I enabled both of my monitors SkyGo started working fine in Windows 10.
Thank you theoldgoat , that worked and solved the problem - more than Sky Customer Service managed to do