Hello, I have a Toshiba Satellite L855-S5112. It has been a very good computer I have been having problems with it being slow until one day it finally would not turn on. I have tried everything in the book (free that is) but I wouldn't mind spending money on it if I knew what the problem was. I have had several people tell me to just buy a windows 8.1 CD to factory restore it. I don't know if they can hear or understand me (not trying to be rude but grrr!) but I can not get anywhere with salespeople. I have Windows 8.1 on a recovery CD I made myself from another of my computers but I can not even get the Toshiba to even read it. Please help I have no where to turn, this is the end of my rope.