Hi noteecee. Before you do the steps mentioned by Be Secure, I see that you had norton installed. First uninstall Avast and use the avast uninstaller utility. Run that tool in normal mode and the tool will ask that it will run your computer in safe mode automatically and click yes and follow the instructions. After that download Norton removal tool from here https://support.norton.com/sp/en/nz/home/current/solutions/kb20080710133834EN_EndUserProfile_en_us and run your computer in safe mode manually and run the norton removall tool.
After that install a fresh clean install of avast and follow the instructions. Upon installation and after it has done a quick start up scan, please reboot your computer manually.