When you start the restore using Alt+F10 you will get the option to 'rescue' your data. In other words save them to an external drive as a backup because when you restore you will lose all your data. Alternatively, you can save your data to an online storage medium such as dropbox. The restore will take approximately an hour.
I just restored my Sony laptop today and now I'm back to Windows 7 and everything is amazing. If you need any help with the restore or have a few questions in mind before restoring feel free to ask me in the comments section below.