cannot load and antivirus software

From: brenda (brenda_at_centuryinspection.com)
Date: 04/29/04 

Date: Thu, 29 Apr 2004 10:06:02 -0700

I have been testing different antivirus softwares on our computers here at my office EXCEPT one i cannot get them to work on one here. Everytime i load one it will not start up and I have to go into the safe mode to delete it then the computer will start up correctly..

Help..