In the past I have had 3 gpu's working (6850 + 7870 + 5770) In this motherboard:
http://www.asus.com/Motherboards/P5W_DH_Deluxe/6850 using a x1 to x16 riser cable in pciex1 slot 1, 7870 in pciex16 slot 1, 5770 in pciex16 slot 2,
I no longer have the 7870 or the 5770 gpu's, However I recently have purchased two 5850's.
So my problem is.. Now when using the 6850 with x1 to x16 riser cable, when I try switching it all on the screen says no signal, I have tried every sequence with and without using the 5850's, Even tried the 5850's with the riser cable, But for some reason it will not send a signal. It is strange considering I can't even get not one gpu to work through pciex1 with riser.
The original 3 gpu's I was using I do recall having to go into Bios to set to boot pci-e/pci-e express rather than pci-e express/pci-e, Checked that still nothing.
If you have any suggestions that you think may help?
Thanks,
