Unwanted Ad Popups
I was desperately looking for driver software for a Logitech camera. I thought I was downloading a driver and now I'm getting little ad popups on the upper right of my computer. They happen about ever 10 minutes and they look exactly like Mac popups. The usual one is telling me to download logitech anti-virus from logitechdriversupport.com I've completely closed Safari and run Chrome to no avail. I ran Avast security and it said I have no viruses or malware. I ran another mac cleaning program and it found nothing. I've looked for malware apps that were mentioned in google to no avail. I've sorted my applications folder for recent apps and it's not there. I also don't see anything unrecognized in Applications.
Any help with this would be appreciated.