still d6 error
Take out CMOS battery and remove PSU cable for 30 mins.
Go eat dinner come back and try.
u only 3 secs to clear cmos

Don't think it's a cmos thing. I cleared cmos a lot of times, but no screen. I changed graphic cards to my old one and I was able to see the cmos menu.
Uhm I don't have any display so I can't change any bios settings.
put old card in to do the bios.
Manage to remove d6 error by using 2 separate connectors for the 6+2 pins and 6 pins. But now the problem is no display though I hear the windows start up sound, so I guess the graphics card should be working.
Is it possible for a doa gpu to have working fans?
Yes.
One of my Zotac GTX 970 was able to boot but doesn't produce any signals. Went back to tradepac to exchange for a new one.
Ok, tested it works on another system. Is it possible that this is a monitor compatability issue?