I have a pop up that tells me they are from Microsoft

Hello William.
I request you to send us a screenshot of the issue that you face to assist you further.
Thank you.

the last time this happened one of my computers was taking over and passworded by the scammers and I cant use that desktop. I run a virus check and AVG states every thing is fine

Hello William.
I request you to send us a screenshot of the issue that you face to assist you further.
Thank you.