Unfortunately when a persons knowledge is limited, it's very easy to balme the last thing installed on your computer
for all subsequent computer problems.
Anger will not solve this problem only an understanding of the proper steps to take to remedy
the conflicts between the 2 now partially installed Anti virus programs.
Both must be completely un-installed. The system should be rebooted between each uninstall
and only once this is done, should a new AV program be installed. (I suggest avast!)