we have been hit with that before as well..Here is something that I have learned that seems to help me..Take the computer down..(shut it off) manually if you have too..Than before you boot it back up..Keep your finger on the F8 button and than bring computer up..do not take the finger off the F8 until the computer is on..Your icons will be HUGH in that mode..that will put in a safe mood..From there you can either locate the file and delete it from your computer or you can do what is called a recovery or partial recovery..(system restore) which you can choose what date you want the computer to restore itself..It will take away any programs that you have downloaded up to that date..than shut the computer down and reboot..It should go back into its regular mode..