To me, it looks like by now the waters have become quite muddy and maybe,
starting from scratch would be the best solution.

Make sure that your operating system is totally updated including all the service packs.
Uninstall and remove avast! and Avira and then re-install avast!

Instructions to successfully install avast! 6: You can also download these instructions from: http://goo.gl/4IKlO

  1. Download the product avast!6 Free:
    http://files.avast.com/iavs5x/setup_av_free.exe

  2. Download the REMOVAL TOOL for your current Anti Virus Program by following the Guide offered here:
    How do I remove old third-party antivirus software before installing avast!?
    https://support.avast.com/index.php?languageid=1&group=eng&_m=knowledgebase&_a=viewarticle&kbarticleid=574
    ( The removal tool for avast! Antivirus (should you ever need it) : http://files.avast.com/files/eng/aswclear6.exe)

  3. Once these 2 programs are saved to your computer in a folder that you can locate or,
    to the desktop and, you can easily identify these 2 files, DISCONNECT FROM THE INTERNET

  4. Go to the Control Panel > Select add/remove > (Programs and Features in Windows 7)
    select your current antivirus program and select uninstall. (Allow it to uninstall all features of the program)

  5. Reboot your system.

  6. Run the removal tool for your old Anti Virus Program saved in step #2

  7. When the tool finishes running, again Reboot your system.

  8. Install avast!6 Free by running the program downloaded in step #1

  9. Shut down your system – Reconnect to the internet – Start your computer.

  10. Avast!6 Free will now be installed and will update it’s virus database.

  11. Register your new avast!6 Free product by selecting the Register Now button.
    If you need more help, get it from here: http://www.avast.com/registration-free-antivirus.php

This will give you a clean install since you’ve removed all remnants of your old AV and also totally remove all remnants
of the original failed install of avast!

Let us know if this takes care of your problem or if you still need further help. :slight_smile: