Hey, a few days ago I downloaded a certain video. Afterward, on Firefox (IE and Chrome works perfectly) my Google constantly re-directs me onto a random site. At first I thought it was something minor and ignored it, but then other things started happening. For example, I began to get the BSOD with the message "Irql not less or equal." My windows update stopped working and I get the message "Code 80072EFE." I also noticed quite a huge lag when I start up and shut down my computer. I can't change any start up programs on my control panel because, for some reason, it takes me to the windows defender screen. I notice more and more problems as each day goes by. I use Windows Vista Home basic Intel Pentium Dual CPU E2180 NVIDIA Geforce 7050 / NVIDIA nforce 620i I use AVG 2011 Free Antivirus and Malwarebytes for my anti-virus programs. Any help would be appreciated. Thank you.