The following were carried out in order of appearance:-
My computer had Norton's virus scan product but was out of date. I didn't use it. I used malwarebytes, Avast and Housecall (over the net.)
I cleaned 26 malware and 2 viruses out. I think it damaged some files because the normal mode froze and didn't complete loading the desktop.
* I repaired WIN XP with the OS CD and this fixed my loading problems.
*IE7 worked in safe mode but not normal mode although all internet connections were fine in computer and from router to WWW. I could only ping to router though, not to outside world, in normal mode.
*I deleted Norton's virus scanner from my computer and BINGO! Good as new!