@ krgoodwin
If you haven't had an Norton AV products in this system, then I wouldn't bother with the various Norton removal tools.
Just removing the Ghost entry from the startup is unlikely to stop the low level driver from being loaded. Since your version of Ghost is designed to be resident that will start the low level driver (outside of any startup entry). It is a little like disabling a resident AV, the low level drivers are still installed and it is these low level drivers that conflict.
You could try this first:
From the avastUI, click Settings, Troubleshooting section, check the 'Load avast! services only after loading other system services' and see if that makes a difference, see image. I'm not too hopeful as this only delays avast by a small margin and only after windows system services and possibly not after this driver.