Welcome to the forums, dlr ~
From your description, it sounds like your browser has been hijacked in some way, but more info is needed. Please read this post and provide as requested there; that will help us help you.
https://forums.comodo.com/virusmalware_removal_assistance/required_information-t4866.0.htmlPlease be as specific as possible, especially on symptoms and possible source.
BTW, I've moved your post to the malware removal assistance board so that your problem can be better focused on and responded to.
LM