i cannot turn ON Avast!

Avast Free Antivirus / Premium Security
1

i bough new licence for 3 PC for 1 year…after 1 day my Avast on my laptop turned off automaticaly…i cannot start it…it show my “File system shield provider not found”…whats going on?

2

Repair avast!:

  1. Control Panel → Add/Remove programs → avast!
  2. Scroll down and click on ‘Repair’.
  3. Follow instructions.
  4. Reboot.