Hi Freebooter,
Thank you for your advice to date ...
Boot mode it set to UEFI and this would appear to be correct. I a restore it with boot mode set to BIOS (or possibly legacy - I don't recall exactly how it was labelled) and got a message telling me a restore wasn't possible.
I followed (as far as I can tell) your diskpart instructions. I've included a photo, in case you can spot anything I've missed.
[ATTACH]72913[/ATTACH]
I acted on disk 0. 2 and 3 are external hard disks.
Diskpart succeeded, and I re-tried the restore.
Unfortunately it failed again, giving what appears to be the same error message.
[ATTACH]72915[/ATTACH]
Have I failed to follow the instructions properly, or other wise missed something?
Any advice greatly appreciated.
Thanks
Jim