I'm going to have to bite the bullet and either buy a new PC or replace my hard drive sometime soon.
What I'm anxious about is that I've been told that even replacing my hard drive with a modern SSD could mean I have problems installing my beloved ancient Office Suite from CDs (bought as a "competitive upgrade" around 2007, I'd guess). Apparently, W10 or W11 if installed will refuse to load a "legacy" product of this type.
The question is, if I should need to buy a later version of Micosoft Office, which one would enable me to run not only HYPTUSS, but also do XIRR calculations? I have a later version of Excel on a laptop and it is not only does not recognise XIRR, but is a right ugly program to use with many unecessary complexities in the toolbar.
Alternatively, is there some other program I can load which will do the same things - i.e recognise my XIRR formulae and run HYPTUSS - and run my old Excel SSs which I would still want to access?
Any advice to help my deciding what to do next would be gratefully received. This brave new world has run on a long way in the past 20 years and they've made buying a simple thing much complicated and confusing, it seems. Currys, for instance looks like it is offerring over a dozen versions of Microsoft Officec, and I fear there waits an elephant trap for me*.
* My local computer guy suggested one consting £159, BTW.
Arb.
At the OP's request, I've moved this to the Technology Board as the discussion is now a bit wider (chas49)