I have win 7, this is a trojan that comes in legally. It is a rogue trojan. If you reply yes to the question "if you want these errors removed" it will tell you to go to their webpage and buy a antivirus program. Once you say yes to it it will continue to give you a popup sign that says you have errors.
I have Norton in place and it still comes in often. I can only get out of it by x ing IE. and restarting IE. Thank you