MA790X / MA790XT-UD4P 790X bugs fixes etc etc.....

[bladebel]

hi,

i'm struggling with this board in the following setup: everything is new since friday:
GA-MA790XT-UD4P
sapphire 4890 vapor-x
4 gb dd3-ram (kingston value)
X4 945
corsair hx650 power supply

what happens is that after pressing the start button everything seems to power up but my monitor (tried 2 different ones on different cables and connectors) doens't get a video signal but everything seems to be running (graphics card lights and fan are running, cpu fan is running)
i've rechecked all the cables, the radeon has the two power cables properly connected; i've tried another video card (same thing) and have tried the 4890 in my old computer and there it works flawlessly so i have ruled out the graphics card
i've also mixed and move the 2 ramsticks around, tried it with one, ... so i don't think it's the ram either

so it's down to either the mobo, the cpu or the ram; cpu is seated properly (haven't got another one to test...) and so is the ram
the boards gives no beeps whatsoever at startup so i can't really diagnose what's wrong ...

any ideas? Could it be a bios-problem in that it doesn't support the cpu ? i don't have another one to flash it either
if this is the problem, is the only option to send it back to the supplier and ask them to flash it?
thanks for any replies !