How To Remove a Fake Notifications From Facebook Messenger?

Download and run these cleaners; all free, safe to use and regularly advised here.

adwcleaner

http://www.bleepingcomputer.com/dow…

malwarebytes

http://filehippo.com/download_malwa…

Junkware Removal Tool (JRT)

http://www.bleepingcomputer.com/dow…

ccleaner

http://filehippo.com/download_cclea…

JRT installs to the desktop from where you run it. It opens into a dos style window; follow the instructions therein. It will reboot the system as part of its process.

Install all the above using manual/custom option – NOT the default/proffered automatic. Watch and carefully uncheck all those pre checked boxes (so helpfully pre checked) other than the actual utility itself. That way you avoid acquiring al manner of pest and changes to your system; many of which are PIA to eradicate.

Retain any logs generated for possible reference if the pest persists…