I have tried everything I can find to remove the Avast Antivirus Clear Uninstall from my computer. Deleting it in MSCONFIG only appears to hide it. After deleting it and restarting I look at MSCONFIG and under the General Tab it is set for Selective Startup. So I change it to Normal startup and restart. the AVAST Antivirus Clear is back in the boot section. So my reason to believe that deleting it in boot section is only changing msconfig to selective startup and not actually deleting it, only hiding it.