Donna,

Norton can be difficult to remove, as I have done it on many machines. Make sure you reboot after running the Symantec unininstaller http://us.norton.com/support/kb/web_view.jsp?wv_type=public_web&docurl=20080710133834EN
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I also suggest that you check for remnants by going into Safe Mode > Advance Search > NIS (and type in under a different search Symantec, and again Norton)…see if anything comes up. If so, delete and empty the recycle bin while in Safe Mode.

If you have something like CCleaner, there is a Slim version available as well at http://www.piriform.com/ccleaner/builds – 4th option down, run it after rebooting. It removes unused files (cache, temporary Internet files, etc.) from your system, allowing Windows to run faster and freeing up valuable hard disk space. It also cleans traces of your online activities such as your Internet history. Additionally it contains a fully featured registry cleaner (you can make a temporary back up of your registry fixes is Documents or on a USB).

If Avast does not seem to be working after uninstalling Norton, try doing an Avast Repair:

  • Go to Control Panel > Add/Remove programs > Avast Antivirus.
  • Scroll down and choose Repair function in the pop-up window.
  • Reboot.

Let us know how this goes for you. Thanks.