SHIELDS OFF/ON

Avast Free Antivirus / Premium Security
1

Each time i start the pc a warning says that Ransomware shield and Behaviour mode is off , i turn then on but next startup they are off !!
Also when selecting a Full Virus Scan it takes 2 secs ,then says no problems found,surely its not that quick now it used to take some time to do it .

2

Repair Avast:

  1. Avast GUI → Settings → Troubleshooting
  2. Click on ‘REPAIR APP’.
  3. Follow instructions.
  4. Reboot.
3

If Repair doesn’t fix the problem, try the following:
If your Avast settings are not the default settings and you want them restored after the Clean Install, follow this before removing Avast.
https://goo.gl/TXjM7h
Clean Install of Avast:
https://goo.gl/4Ptzkf
If you need additional help with the Clean Install, watch this:
https://youtu.be/p-h3myRD51A