I have win 10 pro on a Lenovo Laptop. When I turned it on it said I think "connection in progress. Do not turn off. I left it on for over a day and still
said the same thing. I held down the power key and it would not turn off. I tried ctrl alt delete and that did not work. Finally I disconected the power cord
and removed the battery. Thar did it. then it started up as normal. WHAT HAPPENED??

Jerry