Laptop crash

I lost 2 days of work due to my laptop completly crashing.I couldn't turn it on past the lock screen and it took a 2 hour wait just to get that far.In the end I spent all last night night tinkering around and returning my laptop to factory settings.I was really lucky I manged to save all my recordings as on first reboot of my files they didn't work,Luckily I saved everything onto a usb doing some weird complicated stuff and after 7 hours managed to reinstall everything.My laptop is really slow at the minute tho but just glad I saved everything