The file is not in the chest, but my tool bar is still gone. I tried reinstalling it and it didn't show up.
Thea67
If it isn't in the chest, then you didn't choose Move to Chest upon detection.
avast doesn't take anonymous action, you have to tell it what action to take in the Home version. In the pro version, you can set automatic actions, but again you must set them.
What of the other choices did you choose (see image example of alert window with options) ?
If you deleted it then avast does as instructed and deletes it, so you would need to use a file recovery tool, something like:
Recuva Deleted File Recovery application -
http://www.recuva.com/, also see Builds,
http://www.recuva.com/download/builds as the Portable version would help as it doesn't have to be installed and the slim version if you don't like toolbars (ironic I know).
The longer you leave it the greater the possibility that the files location will have been overwritten.