I've been trying to reset windows 8.1 by going into settings, update and recovery, and then clicking Remove everything and reinstall Windows. When i do so it tells me i am missing files. I have tried reinstalling windows to create a ISO but when i put in the product code on the side of my PC it tells me i cannot use it to install a retail version of windows.
I don't know what else to do at this point. I just want to restore to factory, but i cant.