I'm a begginer on computers and I have a HP pavilion a1520n with Windows XP media center edition 2005. I accidently deleted a file and now every 30 seconds I get an automatic pop up saying " the feature you are trying to use is unavailable. Click ok to try again, or enter an alternate path to a folder containing the installation package 'EZARC.msi" . I can't figure out what to do. Sometimes there's another pop up that says, "Try the installation package again using a valid copy of the installation package 'EZARC.msi' " Can someone please put an end to my computers suffering because of its idiotic owner?