I'm hopeful it might be fine for a while. We still don’t know what the problem was, though. Still, I thought my computer was dying of old age and so I’m glad still to have it.
I also mentioned previously, I think, that I bought a new laptop to replace my previous one given to one of my daughters when hers broke. I bought two copies of Microsoft Office (one for my laptop and one for DH) and it installed but wouldn't register or activate - the code I supplied was not considered valid. I thought I had been a victim of software piracy (that was the message DH got) and had been fleeced out of the purchase price (not inconsiderable). However, the company I bought it from responded appropriately, checked to see that I had properly followed instructions and decided my code had been faulty. Today they supplied a new code which worked fine and I now have a properly activated copy of Office. DH's also activated okay.
Getting my desktop running properly and setting up my laptop has taken quite a while and is ongoing. I’m hopeful, though, that I’ll end up with a well running system and that my blog posts will improve.