Put a copy of all files on another device, memory card, external hard drive, cloud back up etd..
It is very possible to crash a computer during a change of an Operating System. It isn't just àn update. You are changing the OS. (learn to partition well and you might do that to lower risk, but nothing beats isolated backup and it's easy)
Your computer wasn't really designed for w-10 and you need to keep an eye on things incase you're model needs a tweak to be 100% right.
Backup anything you care about fist. Including W-7 recovery discs to revert baxk to 7. (on a few w7 laptops, w-10 1st launch charged some nonstop, despite lights, cooking some batteries if the thing was left plugged in. You had to carefully monitor battery charge at 100%...fixed? Ya never know, it was hit &miss years ago)
