Thanks for the suggestions folks.
I opened the back and released and reinserted the RAM and hard drive cards. No loose cables by visual inspection.
A few points...
1. Steve, what does the "USB adapter for the MiniPCIe SSDs" do for me? How does it fit into the picture?
2. The reason I prefer an Australian supplier is for ease of comeback and claims if something goes wrong. If someone can give me the proper description (make/model/whatever) of the SSD
for the Mini-9 I could probably search out a supplier. Also, I might even consider one with a greater capacity, depending on price.
3. I have no experience at all with Linux. Can anyone suggest a small, easy to setup distro that would be good for the purpose suggested by Steve (i.e. try booting from a USB drive)?
By the way, I went into the configuration screen and it shows the following:
Fixed HDD: STEC PATA 16 GB-(PM)
HDD Size: 0MB
And on the board itself is: STEC P1850 Rev. C
But I'm not sure if any of this is a description that a non-Dell supplier would recognise.