So the answer for which browser I am seeing the adverts on is Chrome. I really do not use the other browsers.
We need to reinstall Chrome and see if that solves the problem.
Click Start > Control Panel > Uninstall a program.
Uninstall the following if present.
Google Update Helper
If you're asked if you would like to keep any personalized settings or folders, say NO...
Now make sure that the folders from Chrome are deleted!!!, delete the below if they exist.
C:\Program Files (x86)\Google
Now reboot your computer.
Download and reinstall Google chrome from Here
Still seeing adverts?