turned on my computer and windows is not poping up just a blank page no tool bar or anything only a privacy center pop ip is telling me i have threats and it wants me to buy this protection but i already have norton 360 but i cant get to it to run any scans. The only way i can get to the internet is through a support limk at the bottom of the page i dont have a start menu or any thing just a blank page i would greatly appreciate any help i can get thank you i have windows vista on a hp pavillion