Here's what I've found, I hope that it will be helpful: https://us.en.kb.sony.com/app/answers/detail/a_id/37848/~/how-to-access-safe-mode-when-you-cannot-access-the-operating-system
If you click restore, the system might bring you to previous state but it's not guaranteed. I suggest that you get a Linux Live CD and try to start your laptop with it. The other thing is to erase your disk and make fresh install of the operation system.
I think, the best solution is to bring your laptop to a professional PC company to make all the tests.
Best of luck.
Happy New Year!