Thank you for staying with me on this. I really appreciate your help.
I have Reset all the Defaults and tested Screenshots to see if it worked and I'm pleased to report that the mugshot appeared again in this post. I Didn't want to subject you to it again so I deleted it. It had served it's purpose.
I signed up to the 100 GB one Drive this pm and to find out how it worked I discovered a You Tube video tutorial. When I played it there was no volume and my heart sank, yet another problem. I hadn't used any programmes with audio since the Reset and only noticed it today. I checked loads of settings and could not find the problem. I Googled it and one of the possible solutions was checking the Audio on the Taskbar. It was Muted. Before the Reset, I would have checked that first but because all the problems I'm experiencing are difficult for me to sort out I didn't think of the most obvious solution.
Back to the original problem with my Touchpad. As I was looking for other settings I found this, see snip
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I could not see the Touchpad as a device although the drivers for it are in Device Manager. I want to ensure the Windows side is covered before I speak to the laptop manufacturer. One Device 12C HID comes from Windows, all others from the manufacturer. The little yellow triangle beside 12C HID Device denotes a problem and it hasn't been resolved by the Reset. It was for that reason i did the Reset.