Hello Hectic4409,
Before fixing any issues not related to avast. Check the following below:
1) Can you check for me which version of Firefox you are using? Are you using the latest version? The latest version is 26.0
2) I see you are using IE9. The latest version of IE is 11. Make sure you upgrade it.
Note: If you don't have the latest version for both Firefox and IE, I suggest you install the latest version and make sure your computer is fully updated via Windows Update.
As for your Avast issues, I see you have used the Uninstall Utility and it didn't work. There is also another Cleanup Tool for Avast that you can give it a try. Please do the following:
1) Uninstall avast via add/remove. At the end it will ask you to restart. Restart it.
2) Use this tool avast uninstall utility
http://www.avast.com/en-nz/uninstall-utility. Run this tool in safe mode and follow the instructions.
3) Use this tool called Avast Cleanup Tool from here
http://rejzor.wordpress.com/avast-cleanup-tool/. Scroll down that page a bit and you will see a download link called Avast Cleanup Tool.
Note: Run the Avast Cleanup Tool in normal mode, don't run it in safe mode. Run it in normal mode and after it has been done. Restart your computer manually.
4) Finally download and install a fresh copy of Avast. After installation is complete avast will do a startup scan. Once the startup scan has been completed. Restart your computer manually again. After restart, register your copy of avast.