Blasted Technology !
So back to my DVI Issue on my newly acquired, possibly defective HD 4870: I purchased the RGB to my monitor cable/connector ( not a DVI )
The similar message appears on the LCD screen: "disconnector" ..
Alas, fan is still operating on the card..and I am still at a loss!
But the replacement should be here tomorrow so....I'm running out of hope for this little devil..but still accepting clues for good measure.
Thank You All.