Hello, I need some help on my dell desktop. Apparently my subscription to symantec was up for renewal so I decided to download the renewal. Program seemed to load fine until the final reboot. I get almost thru the reboot process when the blue screen appears Bad_poo_header and a lot of info about hardware and software conflicts.

What I need to know is there a step by step boot up I can go thru and disenable symantec so that my pc will boot.