First I just tried booting to an installation USB and I got

1) not enough space to extract temp files (it was a brand new computer so there was plenty of space)
I put in two drives twice as large (1 TB each) then I got:

2) we can't find any disks
I found the controller drivers and installed win 10 (All good up to here)

3) we can't find the internet
I continued without it thinking that would be easy to fix once I had the OS installed

4) everything will be horrible until the correct display driver is installed
I'm downloading Snappy Driver Installer using a different computer hoping it will solve all the driver problems

5) Enter the Bitlocker key to unlock drive D:\
Brand new formatted drive so I have no idea what it's talking about.

6) We can't see any internet hardware
Presumably because there isn't a driver?

Any suggestions from 3) onwards much appreciated

Thanks - rev