need help; I need to know how to stop windows 10 update after son clicked on pop up and now says to restart pc to start the update for it. I downloaded windows 10 last summer, it killed my hard drive, had to get new one. Went back to windows 7. happy till son did this. It is turned off right now. Can't keep turning it off the hard way, or avoid restarts forever. Anyone know how to avoid the download? This free download has cost me more money than it is worth. It also killed my laptops hard drive, and I had to get a new one.