Long story short, I have no idea how this happened. I opened my laptop and it was a black screen for 30 minutes, kept rebooting and nothing. I decided to boot from an USB and see what the problem is but eveything was fine, I was able to access some files by changing disk root from the live usb so I decided to reboot. I turned on the pc and it loaded but it loaded as if it I just installed Fedora, asking me for username and password but I do not know wher all my files are. I tried setting the username the same as my old username but it says the username is taken so I am guessing my files are somewhere in the disk drive but I have no clue how can I access them. I have no clue what to do or how to even start.