Question Author
Thanks everyone for your answers. Right now my PC is wrking fine, so I am a bit reluctant to 'rock the boat', but as support for Win7 ends soon, and my PC exceeds the technical requirements for Win10, I am tempted to update it while it is free to do, rather than lash out on a new machine. I expect a few hardware incompatibility issues, like my printer driver for example, but as I use open source office software that can be updated for free too. Togo, I had not realised I could still do it for nothing direct from Microsoft, so thanks for that tip! My broadband contract is capped, but not between midnight and 8AM, so I planned to set it going then going to bed to let it get on with it!