should be a clue. That would lead me to believe that the computer is infected. Try this advice from Grif:
I would also try one of these:
I'm new here so I apologize if this is in the wrong place, however I'm consistently having the same issue with any program I attempt to download right now. I download it, and it saves to a file in my computer. I have Windows Vista, and it is a Dell Inspiron 1521 laptop.
However, when I go to run the files, a box saying 'Launch Application' pops up with two choices: Microsoft Works or Firefox. If I click on Firefox, I just get a blank tab opening up. If I click on Microsoft, nothing happens, so I'm finding it virtually impossible to install any anti-virus program at the moment. If I put something with an anti-virus program on CD into my CD Rom it won't even load, or run, or install (yet I know the CD Rom does indeed work b/c I can still burn CD's and play DVD's just fine). Does anyone have any idea what I'm doing wrong in this case? Thank you!