|"i have avast free on my computer, could this be conflicting with norton??"|
Yes, get rid of Norton.
Can I run more than one anti-virus program? Anti-spyware program? Firewall? Should I?
Running two or more real-time anti-virus monitors at the same time is very likely to cause a conflict. That conflict could result in error messages, crashes of the anti-virus programs, or other types of failure.
"i cant uninstall it because i cant open anything"
Did you try Safe mode?