My son's lap top has suddenly developed secuity centre continual interuptions, all it wants is for a payment, it blocks just about every movement saying there are massif infections. He runs McAfee antivrus and how could this have crept in and how the h... can we get rid of it. We can't unistall McAfee it wont let us. Heeeeeeeeeeeeeelp Please.
On start up it has added icon Security tool. Then comes up with centred screen that says Security Tool with 35 infections with all threads option then comes up with Activate Security Tool. With options 1. Activate or continue unprotected. It just wants us to register and pay more than what we are paying already for McAfee antivirus. This Security tool we don't want, if McAfee is on how are ther 35 infections. Every time we boot up a different number of infections come up.
I hope you also ran Malwarebytes as suggested by buteman - these infections like rogue security center are becoming more and more difficult to get rid of, and you may find it returns next time you boot up.