OK McAfee is installed and running on this computer and it blocked Avast all bar one driver.
I will remove the Avast files leaving just the Licence file and the setup file
It should boot normally after this
But, before you install Avast again you must uninstall McAfee, I will assist if you wish
Download the attached fixlist.txt to the same USB as FRST
Run FRST as before and press Fix
On completion reboot to normal windows