It was about two days ago this ads appeared again on my laptop. I didn't intend to install it. I forgot the way how to remove it. I had a look on CCleaner. I saw one program named offersWizard, but when I tried to uninstall it, the is a notification "...". I was worried about it, because I didn't really understand. I thought my laptop would be damaged.
Just now I tried searching again on Google, then I found that to remove OffersWizard ads is just uninstalling the OffersWizard program. You can go to Control Panel-->>Uninstall or change program-->>choose OffersWizard program-->> click uninstall