AAaaaaargh !!!
I have little/no idea of what I have done - I thought I was disconnecting the USB connection but it turned out to be the wee power connectors for the LEDs on the front and for the - I don't know - something else.
I checked and pulled out the USB thing.
I decided, after the attempt to flash my BIOS, that I would put things back together, contact Dino and send it back.
I reconnected the power things - and got them the wrong way round, so no red LED, no restart button.
Connected the right way; re-connected the USB cable.
Switched on to check lights ..... and ............ and
..... the d**n thing booted up, went to the Motherboard screen, I (very carefully) reset the date/time and it is now Restoring itself

!

or what ???
I'll post back from my own PC when it is OK again

.
Not that I am counting chooks yet .......
Absurd question [which will maybe get me in BIG trouble

]
Computers or Ladies - which is easier to understand ??