£120 pounds actually
However touch wood all is well they reactivated it for me for free .
Touch wood this will be alright from now on .
Perhaps it would be a good idea to print out anything really important and keep them in a box. At least Microsoft can’t their mitts on them. 
Look on EBay.
I’m glad it all turned out well Muddy. 
Their web site says 5.99.
(or, instead of using that dreadfully long link, try searching for Office 365 Personal Edition) I went over to this 365 version after having used lower level Office packages which I got off Ebay, or wherever.
They were always suspect because they are really just surplus product keys nicked off company packages where they could take away licence keys and nobody would notice.
After some dodgy experiences I decided that about 1 pound a week wasn’t bad for what you get with Office 365.
Beware of sellers offering you Office cheap.
You can’t buy Office - you could only ever buy a lease to use it.
On the subject of your error code.
A search on that code leads to a lot of suggested ways to fix it - as a corruption problem.
One of the ways is just to delete it and re-install.
Doing that should not cause loss of your documents.
Assuming you still have the installation disk and it has a valid key.
.
MS Office proper is free to download, the activation key is what costs but as I posted earlier, these download keys can be purchased quite cheaply.
I think the problem here is not Word itself but the fact that Microsoft decided to purposely sabotage people’s understanding of it purely for profit. I despair at IT companies but they have us by the S&Curlies.