Hi my name is ***** ***** I will be the expert working with you today to help and resolve the problem you have posted.
I am sorry to know that you are facing problem with your computer with popups. You are correct this is called popcalls done by marketing medias and companies scaring customers that the computer is infected and has virus it it.
Simple ignore it or check in the installed program of tap snake and remove it from the installed program list. You are good to go. Its a fake popup to scare your computer is at risk.
I hope I've provided the information you were seeking. If you have any question feel free to ask. Please provide a rating by clicking on the smiley face below or stars on top right of the page and hit submit. Thank you.