can you recover files after a complete format
The answer is yes.
Format does not erase the data actually.It just marks the head of section where data locals by a kind of symbols telling operating system that this section is new data storable. In this case, we still have a chance to recover all data from formatted hard disk so long as there is no new data stored on after formatting. What we need is just a data recovery tool
The first thing you should do is to stop putting any new data on your laptop before recovery to avoid data overwriting.
Then search data recovery tools on Google, there is various software on the market.
If these files are really important and valuable for you, I suggest you try professional recovery software ASAP. According to my own experience, recommended one is Wondershare Data Recovery
(because I used it and it helped me recover all my lost files and videos with nice quality.) It is a wizard designed software so you just need to follow the guided interfaces with only 3 easy steps.