Fake Blue Screen, Scam site, can't close program

Flyboy30126

Distinguished
Oct 27, 2011
3
0
18,510
Can anyone tell me how to get rid of this FAKE Blue Screen/ Virus Warning thing that has infected my system? It comes up in my yahoo homepage and say's I have a virus, call this number ect. Then it keeps re-cycling and won't close. The ONLY way you can close it is through the task manager (Windows 7). I ran into this about 4 months ago and just had to FORMAT and start fresh to get rid of it. Someone said to use "AVAST Boot Time Scan"? I have tried Malwarebytes and it comes right back. PLEASE help guys, I don't want to have to format again!! Flyboy30126