Very weird problem

[RomanNose]

Basically I have just got the 6870, the problem that is occuring is that sometimes it does not detect my graphics card when booting and defaults to onboard graphics.
I am currently using a asusp5n73am, this is a nforce chip some have had problems with this before, and am wondering is it the graphics card or the motherboard?

Does anyone know some bios settings that might fix this? or is it a permanent problem?

 

[RomanNose]

Well I have plugged it into the 6870 at boot, and the fan just went at 100% so then I plugged it into onboard to change bios etc.

I cannot actually disable the onboard graphics,the only thing I can do is set priorities, and I have just managed to boot. I have to go and boot into windows 7 using onboard, then shutdown and boot again for it to work.

 

[RomanNose]

I know, I put it as pci e but when I cold boot it goes to onboard sometimes?
Really weird problem however this morning it did not happen and I just left it on,I really did not want to spend my whole day struggling to boot to my graphics card, just because I decided to turn it off.

 

[RomanNose]

Yes the bios is set to pcie, I have the power cables inserted all fine and I have been using it fine for a couple of days however 1/2 times it will boot to onboard graphics instead of pci e, very strange..