FS 2 Won't Open

Went to open FS 2 this morning by clicking on PC home page FS 2 Icon.
Normally the blue screen with all the FS 2 choices would come up, but this morning I got a small black screen in the center of the home page saying that FS 2 was opening.
Then that screen would disappear after about 3 seconds, then reappear - & keep on with this "blinking" cycle.
Any thoughts on how to fix it, make FS 2 open?:confused:
Thanks
treetops

Had done a restart, no effect.
Shut PC down completely & went back an hour later. This time it started ok.
If I had to guess what the issue was I suspect it was something to do with Steam getting in the middle of the opening process, looking for a wifi connection, which has been slow this morning.
Had a look at NYC. Very impressive set of skyscrapers.
treetops