Well interesting turn of events and many thanks to Hansangb
I went out and bought a adapter Display port to HDMI this arvo. Nothing ventured nothing gained.
Plugged it in no joy the Oculus program recognised the headset but then in setup would not continue as it didn't recognise the HDMI port. Running without a setup , it was back to blinking etc in Oculus Home as per before.
I did however remember I had a second adapter laying around which is USB-C to VGA & HDMI,
Well long story short I've finished Mission 5! well almost Dodge or Uzi flights caught a cropper and the whole show went pair shaped - apparently
I do have all the settings in game zeroed to low - so the quality was pretty ordinary and it is flown at night time perhaps I might even try to increase those setting again!
The Omen has three outputs from its video card - Compact - Display Port, full HDMI and USB-C
Its early days but if it works I'll pass it back to Oculus Support and hope they start to tell people about this and save them lots of anxiety...
Is there a way to get the DP to work through Nvidia?
Anyway I'm over the moon - thanks for the help and interest (Freebird23)
I will update again if it remains fixed or if it suddenly fails.
However the Oculus is far from out of the woods..................