Bios wont boot with atomic 4870x2 but windows sees it.

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The Batman is Clark Kent

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Dec 27, 2013
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Note: All components mention will be formatted as hyperlinks for easy reference.

Dear pc masters of the world.
I recently got a Sabertooth p67 motherboard (B3 revision updated to BIOS) and when i boot it with my Sapphire Atomic HD 4870 X2 installed it starts to post and runs memok then the VGA_LED stays lit solid red and it hangs. The graphics card was working when i pulled it out of the last system it was used on. and i figured out that if i install my XFX - Core Edition Radeon R7 240 2GB DDR3 into the first x16 slot and the 4870x2 in the second it will boot using the R7. and windows can see both 4870 cores and the r7 in my device manager. and they do not show errors (no yellow triangle). However im not getting any display off the 4870's dvi ports.

I am currently playing around with the display drivers ive tried 12.x through the current so far and i have had problems with Catalyst not even opening.

I've tried all different ram configurations. and both pcie slots.
i also have not been able to get it to boot with the r7 switched to the second slot and the 4870 in the first. i am almost certain that its getting enough power as to no avail i have even tried using a second power supply (jumpered on) to provide power to the card. there are no power errors(or any errors) displayed on the cards LEDs.

Is this card simply not compatible with the motherboard causing it to not boot and not display once booted? Can anyone tell me whats causing this? or just throw me some ideas to get it working?
i can not afford a new card and the r7 is going back into another build for my friend.

additional components installed.
PSU - EVGA 600B
CPU - Core i7 2600 (non k)
RAM - Corsair Vengeance blue 2x4 8gb kit
SSD - 128gb M4
Fan Controller - Aerocool Touch 2100

TLDR; Atomic HD 4870 x2 will not work on my Sabertooth P67(hangs at post with VGA_LED lit) but when booted from a second card (XFX R7 240) windows sees all three GPUs in device manager(but still no display from the 4870's DVI ports).
 
Solution
eatmypie
One website I go to sometimes for things like this is http://www.hardwaresecrets.com/printpage/ASUS-Sabertooth-P67-Motherboard/1345 Also I think for asus boards there is an option to set which pci-e slot you want as the default boot, I personally own a rampage and I remember when I first installed my video card I had the same problem until I found out I could switch the default pci-e slot, strangely it was set to the 2nd one. If nothing else seems to work I would guess you have an incompatibility issue with the card and motherboard since you said the r7 worked fine. one thing you could do if you want to wait a while is get something like a 7870 which right now are between $150 used $179-210 new which will run a lot of games fairly well...
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eatmypie

eatmypie

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Sep 12, 2013
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This might sound kind of obvious but did you try booting with just one video card to start with? another thing you could try is putting in the newer video card first booting setting it to pci-e as the first display device in the bios. If you still have problems with crossfire try switching the the cable so it uses the opposite side of gold plated fingers on the card. Another thing you could do is doing a driver download from the website, not the generic ati/amd drivers from http://www.sapphiretech.com/presentation/downloads/download_index.aspx?psn=0006&lid=1
 
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The Batman is Clark Kent

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Thank you for the input.
yes the first thing i tried was the 4870x2 by itself. but the system wont boot from it.
PCI-E is the default because integrated graphics is not supported by the Intel P67 chipset on this motherboard.
there is no crossfire cable involved in this setup. the card has two GPUs on one card that are run through a PLX PCI-E bridge chip that is between them on the PCB.
the second physical card (the r7) was only there to have it boot so i could check my device manager and would be removed from the setup in the final solution.
 
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eatmypie

eatmypie

Honorable
Sep 12, 2013
1,179
0
11,660
One website I go to sometimes for things like this is http://www.hardwaresecrets.com/printpage/ASUS-Sabertooth-P67-Motherboard/1345 Also I think for asus boards there is an option to set which pci-e slot you want as the default boot, I personally own a rampage and I remember when I first installed my video card I had the same problem until I found out I could switch the default pci-e slot, strangely it was set to the 2nd one. If nothing else seems to work I would guess you have an incompatibility issue with the card and motherboard since you said the r7 worked fine. one thing you could do if you want to wait a while is get something like a 7870 which right now are between $150 used $179-210 new which will run a lot of games fairly well. or you could get http://www.newegg.com/Product/Product.aspx?Item=N82E16814161449 which would be fairly nice
 
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Solution
T

The Batman is Clark Kent

Honorable
Dec 27, 2013
19
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10,520
i cant find a setting for the slot. but i can pick the order, either PCI-E/PCI or PCI/PCI-E. seems to not change.
it just seems so odd that windows can see it and its showing no issues in windows or in device manager. it even shows the two cores with proper names and all.
I just hope i dont need to replace it. it is factory overclocked and i have it clocked even higher. its been running everything i throw at it on ultra or close for like 4 years now.
i guess maybe ill put it on craigslist and see what i can get, or even for a trade. a couple of those r9s would be a good setup in crossfire it looks like.
thank you for the link. seems like a pretty good resource to have.
 
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