Read evreything to the end first. You are doing something wrong this computer has a virus and everything on your computer will be wipe clean unless you turn the computer off for two hour. Do not delay shut off computer now. Just Click home at the top there was no ERROR 4000. It was a little joke. Hope we got you and you think it was funny. We didn't mean to afend anyone sorry if we did.  P.S. Go back and read the terms of use.