We keep getting an error message that as says quick run error, then everything shuts down. It's like windows shuts down or something, browser windows goes, background o the desk top goes, as well as all the icons, the start button everything. You can't use alt, del, ctrl they don't do anything. The only thing we found to do is just press the button to cut it off. Is this something we've done wrong, or from something we've downloaded? What can I do?