Updated to windows 10, years ago on a PC and then it got stuck on a startup loop. I tried to reverse it and it crashed the system. Rang the local computer geek and he picks the PC up and a week later tells me it's cactus, nothing he can do to repair it, and I'll build you a new system, blah, blah. I tell him to bring it back and I'll think about it, I still have a laptop I can use. The drive on the laptop failed a few years later and I thought fuck this I'll give the PC a crack as it was a fairly new system when it failed. The PC fires up and is stuck on the startup loop again, I look online for info and manage to fix it in a day, still on windows 7 which is a pain if you want to run current programs but bugger all problems.