Everytime I get on my computer, it says explorer has performed and illegal operation. I cannot open any of the programs. When I click "ok" the screen goes to just my wallpaper and sometimes it then repeats the same process. Once, after I kept clicking ok the word "kernal" came up at the top of one of the illegal operation bars. I tried restarting my computer from a new Norton Anti-virus cd and it searched for over 5 hours until it said no virus found on the C drive. I can't load the cd while in safe mode. When I try to get on the internet it won't get online and only says the communications port it busy. Is there a virus on there or is there something else? Please help me. Thanks.