Restart the computer, during restart, hold the F8 key down.

Thanks for the reply Zep. I had to re-install it before I could un-install it. Now laptop has Avira anti-virus.

If you were uninstalling an anti virus program you need to do more than simply use the add remove, you need to use a dedicated remover from the AV company or get and use App Remover, which is what I would recommend. If you don't you will have a lot of left overs that often cause problems.

Here is a link that might be useful: App Remover

In my many times trying the AppRemover... it mostly doesn't work, especially in xp. It either cant find anything.. or it says it did and asks reboot now... and doesn't remove the folders and their contents, and leaves some keys too. Think it does find mostly the AppData

Have used it and seen that too many times in way too many computers. Wish it was reliable, would make life simpler for me than searching each time for the right dang uninstall tools.