Assuming that you're using a Windows PC (rather than, say, an Android tablet) run an anti-malware program. If you've already got the free version of Malwarebytes Anti-Malware on your computer, use that. If not, use AdwCleaner instead:
https://www.malwarebytes.com/adwcleaner/
raj.. Not sure I get your drift.
Spath. I tried that and as usual for me things don't do what they say on the tin. When I put 'Popups' in 'search' in 'settings ' I get zilch.