So many problems! Error messages. Please read and help if you can

Squibbler said:

I will try some of this tomorrow but I will be out for a large part of the day so it may be Sunday before I get to try it properly and also need to do the backups

No problem - no rush. Take your time.

Squibbler said:

One last thought tonight... are all USB sticks bootable? This was a 4 GB freebee one. I erased all files before downloading that ISO file to it ... is it worth me trying a different stick?

All USB sticks can be "made" bootable - it depends on what you're doing with them. They're not bootable just because they're a USB stick. You have to put the boot files on them.

You might try creating the USB stick using RUFUS - that will make sure your stick is bootable.
Create Bootable USB Flash Drive to Install Windows 10 - Windows 10 Installation Upgrade Tutorials

You can use RUFUS to create the USB stick for Kyhi's rescue media. You'll have to do it on another machine though, as yours is just too messed up right now.

Maybe we just figured out why it's not working? You have to download the ISO, mount it, and copy all the files over to the USB stick. It should be bootable. But, when having problems, I go to RUFUS - never fails. It has to be done on a working machine though.

Ok I will try that... just to clarify , I need to format it for legacy and not UEFi? I can borrow a laptop. So i create a bootable USB stick with rufus .. as there will need to be these boot files on it as well as Kyhi's ISO file ultimately ?
i need then to download Kyhi's ISO file direct to the stick? When you say mount it, is that done when it boots up as my system kept wanting to open the file in Roxio. No option to mount it. And then i am a bit confused on this bit..l I need to copy the mounted files back to the stick? Thanks

Squibbler said:

Ok I will try that... just to clarify , I need to format it for legacy and not UEFi? I can borrow a laptop. So i create a bootable USB stick with rufus .. as there will need to be these boot files on it as well as Kyhi's ISO file ultimately ?
i need then to download Kyhi's ISO file direct to the stick? When you say mount it, is that done when it boots up as my system kept wanting to open the file in Roxio. No option to mount it. And then i am a bit confused on this bit..l I need to copy the mounted files back to the stick? Thanks

Let's try to avoid Roxio, since I don't have that installed and can't walk you through it:

Okay so borrow a laptop. Download Kyhi's custom rescue media ISO and save it to the desktop of the borrowed laptop.
Download RUFUS, save it to a folder on the desktop of the borrowed laptop.
Run RUFUS to create the bootable flash drive using Kyhi's rescue ISO.
(Don't return the laptop yet...we'll still need it.)