my son is an internet tech and he says if you get ANYTHING that says it's from 'Windows' DO NOT CLICK ANYWHERE ON IT OR TRY TO X OUT. you should press ALT F4 and if that doesn't work do ALT CTRL DELETE all at once and your system manager will come up and click to shut down. OR unplug your computer. I have notices posted at all our computers here at work and someone clicked on the pop-up. Took a looooooong time getting it straighted out. Remember ALT F4 or pull the plug.