devise driver problems

I have installed Norton 2007 and am tryng to run a full system scan - it runs for quite a while then stops ( this was also happening with my old norton) it says it had to stop and the error msg says a devise driver is the problem ?? help!!

I found this site when I googled devise drivers - I am not too computer savvy but have helped intall a new hard drive and memory in this computer so any help is appreciated..