Templeton Peck'sadvice is good if it is an MS issue.
See for example here for a similar problem.
https://support.microsoft.com/en-us/kb/894494
If you need a complete removal and install, see that local Mac seller if it is convenient for you, have them reinstall it - I don't know if they would charge you again.
It may be that you have issues unrelated to MS.
You may have downloaded something onto your Mac that is causing issues.
Your key words are in red.
"Yes I have done. Which is why I thought it might be a bug I imported from a website or document. I think the trouble started when a website offered to clean up my disks and I looked at their offer and did not take them up on it."
Some background on malware by Klaus1
Viruses, Trojans, Malware - and other aspects of Internet Security
and instructions on what not to do by John Galt
" This User Tip is intended to educate anyone unfamiliar with "adware" and its effects."
How to install adware