teefer2 miniport probs and AV freezing comp

I just downloaded Symantec Endpoint Proptection v.11 from my university and am running it on Windows XP w/ Service Pack 3. There is a problem with the teefer2 miniport driver where everytime I start up my computer it shows that new hardware has been installed and then lists teefer2 miniport then a number (i.e. #1). Shortly after this notification appears my computer freezes up, but when I pull up my task manager there’s no program or process that’s using an unusually large amount of memory or cpu. Then when I restart my computer and Windows loads up again the balloon pops up saying that that the teefer2 miniport driver #2 has been installed, and everytime the comp freezes, I reboot, and then the driver keeps getting installed at startup everytime leaving me with multiple teefer2 drivers. The computer freezes up too quickly for me to remove/edit any programs. How do I fix this?