Clicking on Start will open full screen mode. You will
not be able to see or use your mouse inside this mode.
With stopping point 99% and speed 1 (default settings)
it can take from 50 minutes to 3 hours, but much more
likely to be in the middle. Press Ctrl+R to exit, or
Escape if you want to stay on the blue screen page. If
you escaped the blue screen accidentally, click to go
back.