My grandson has a toshiba satellite c55, he said a window popped up that said " system update, if you don't do it, it will be done automatically, or something to that effect, he's 11, and I wasn't there. Now, it will power on, but it's stuck on please wait screen. It runs windows 8. My grandson doesn't even know what type of update it was. Whether it originated from windows or not. I have tried turning it off and back on, and pressed all the function keys. I can't get it to go past this screen. Can anyone help. Windows came pre-installed and I do not have a recovery disk.