it should be so simple to fix it..

Hi all, i need an help.
I've just updated my opera version to 45 and i run it on win 7. I usually restart my opera browser from my last session to work on it but today i had no internet connection and i did an error: i closed the browser with all the saved tabs unopened, maybe i did it two times to check if the line was back.
So when the internet line was back i reopened the browser but i had lost all the multiple tabs of my previous session.
I need to recover the lost session. Will it work if i try to set a recent recovery/restore point on my win 7?
How can i do to restore the previous session? because now i have no saved session/tabs.
Also if i go on the tabs menu on the top right it should give me the chanche to restore my previous setting with xtabs, but it gives me no previously closed tabs
Please i need an help, Thanks