Question MOBO and Vdo card, incompatible?

[Rukik]

Good day everyone.

So I have been trying to get a newer tech vdo card to work in an older motherboard.

Video card: gigabyte windforce r9 290
MOBO: asus M3a32-MVP Deluxe

What I have tried.
-Bios update to newest for MOBO
-Newest bios for r9 290
-R9 290 works in other systems no problem ( rog crosshair 3, 4 and 7)
-tried the 290 card in all 4 pcie slots on m3a32mvp
-tried 4870x2, 5870, and 6990 in m3a32mvp and they work fine
-managed to get the card to post video 1 time after cmos battery and jumper reset. Went back to no post after loading default setting in bios and restarting. Tried the cmos reset again and now no post again.
-removed ram dimms
-Loaded the card in a second slot while using a working card in primary, hardware manager in windows recognises a video card in display adapter slot

Any suggestions what else to try?

 

[iMatty]

What power supply are you using? brand and modal and how many years has it been used?

 

[Rukik]

What power supply are you using? brand and modal and how many years has it been used?

It's a 2 year old coolermaster masterwatt 750 watt

Radeon 6990 works, it draws almost 200 watts more then the r9 290

 

[Rukik]

I guess this is one I'm just going to have to give up on...

 

[Rukik]

I guess this is one I'm just going to have to give up on...

It turns out I hae a uefi bios in the card, I am going to try the legacy bios today and see if it works