|Have you noticed any other strange activity on your computer? What browser are you using? Do you use a desktop email client like Windows Live Mail or Thunderbird or do access your email by going to a website like gmail.com, yahoo.com etc.?|
To start, I would recommend running Malwarebytes and removing anything it finds and trying again.
Let me know the answers to my questions above as well as if Malwarebytes found and removed anything.
Law of Logical Argument: Anything is possible if you don't know what you're talking about.