Junglegirl, Follow the instructions under" "Automated Removal Instructions for Security Tool using Malwarebytes' Anti-Malware:" at the link below.
I have a HP Pavillion Entertainment laptop running Vista Home which has a virus calling itself Security Tool. It tells me I have 300 Trojans and I need to install the software and to do that I need to purchase it and theres a box for credit card details ( like I am that stupid). I can't scan my computer because when I click on AVG it is blocking the window from coming up, I see it flash but it dosnt load. I can get into the control panel and other areas but can't access AVG or Windows Defender to scan my computer. Can anyone tell me how I can get rid of this. Thank you in advance for any advice good or bad that anyone has to offer me. Junglegirl.