Sorry, that didn't work so I must have the wrong drivers, there are at least three different versions of the RTL8723 chip and those have revisions, so you end up with a lot of combinations.
Also, manufacturers can change the design or workings of the chip ie their drivers, so it's suited for their motherboards.
As this is a desktop can you take the side of the computer and take a picture of the Realtek chip as this will clearly show the model and the revision, if you are not sure how to take the side don't stress and I will try another way.
I found the chipset which is an 8821. I'm going to reset the BIOS. If that doesn't work, I will need to perform a factory reset (!) I've got everything backed up, but they said my documents and photos might be saved 🙄 I have learned a lot about hardware over the last 10 days. In one way, which was worth all the effort.
Thanks again. Microsoft is fortunate you're donating your time.