First, the system is 64 bit Win 7 on AMD Phenom II Quad 4; problem was with MS Office 2010 components. The system is brand new. I intentionally didn't put any AV or malware software on yet just in case I ran into problems. On of the first things folks say to do when diagnosing problems is to take of such software. (I use NOD32 on my other systems and I'll be instaling it on this one too.)
I started in safe mode to see if the problem recurred. It did, in a slightly different form. This time I got an error message saying the licesnse couldn't be verified.
As part of my experimentation I tried to activate the product - bingo! The folks who had put the stuff together for me hadn't done that although they had told me all updates had been applied. True for Win 7; obviously not true for MS Office. On doing updates there were a large number, including SP1 for MS Office.
You'd think MS might have been able to provide some clues by way of error messages in normal mode. You'd think MS message in safe mode might have been clearer such as "activate the product". You'd think folks would test the system before delivery. You'd think I'd have been better off installing all the software myself rather than leaving it to the shop that sold me the system.