It says you may have a Trojan?
It asks you to update your “invalidated” Windows?
It asks you to call Support at 800-931-9159 for help?
It is obvious that this window is an online phone scam. Please read the removal guides below to delete it.
Description on 800-931-9159
Pop-ups related to flash player or virus alert are often caused by adware, PUP, or other malware that have already been in your computer. Those programs such as Ninja Loader usually get in your computer stealthily via bundled downloads, e-mail attachments, share files, or advance cookies. Once inside, they may be hard to remove.