Hi folks, I'm new here and i have a problem with my SR-2.
 
For some reason the board refuses to recognize anything in pci slots 1 to 4 while 5 to 7 work fine. I tried clear CMOS, updating the BIOS, replacing the battery, bleeding the power, different ramsticks, 2 different platinum psu's (860W and 1200W) and multiple gpu's but so far no luck. There are no bend cpu pins and no signs of corrosion or short circuits. I also ruled out loose connectors, all of them are plugged in their proper location. I've been breaking my head over this issue for some time but I don't seem to find a solution but I have this feeling it's something stupid. I found out I could get a hold of a new BIOS chip on Ebay to see if this might do something but I'm not sure.. If anyone here has a solution for this problem then that would be great. The board functions normally besides those 'faulty' pci slots.
 
Thanks in advance :)

And you checked the disable pci-e switches too? 
 
It'd really suck if one of your PLX took a crap (the chip that splits the x16 to dual x16 for 1 and 3)
 
 

micahhiggs
And you checked the disable pci-e switches too? 
 
It'd really suck if one of your PLX took a crap (the chip that splits the x16 to dual x16 for 1 and 3)
 
 

jup checked those to and all were fitted nicely in the correct way. I checked the chipsets as well by removing the EKWB block that was on it but no signs of damage what so ever. All the red pci led's light up at boot. At boot it goes past AA and then the E2 error code with 2/3 beeps followed by 7-8 short beeps. Then it's stuck at debug 78 with no screen. I get this with every BIOS. Would suck indeed if the chipset is up for scrap..

What if you disable a few slots? Say kill 2-4 so only 1 is on, video on 5? Use a very low power device, like a network card.
 
Idea 1) the signal traces on one of the slots is messed up, either in the slot or on the PCB.
Idea 2) the PLX tanked.
Idea 3) the power circuit that drives those slots tanked. I've had problems with it being pissy if I mix power rails (I run dual single rail 80a supplies, each within 200mv of each other.)
 
Do you have a way to check the voltage on the slots, and a quality volt meter (fluke, bk, hp, ect)?
 
Some times stuff just fries. My first SR2 cooked its audio right off the bat. Windows and Linux would not see it anymore. I sold that board to my brother, and it still runs three years later.
 

They may be stuck on disable or dirty switch back and forth repeatedly over and over again while its off of course .than switch to the on position
sounds silly but may work

@wizsteve 

Maybe check with ohm meter? 

Sounds like a duff board. The first one I bought new had a duff PCIe slot #1. As far as I could tell the 1st PCIe lane connectivity was broken. Some cards (e.g. Nvidias) completely refused to POST in that slot. Others POST-ed but only at half the link width (e.g. AMD cards registered as x8 cards).

Thanks for the replies, I will test some of this stuff out and see how it goes. Is there a way to get the PLX fixed if that would be the case? (probarly not but asking is free right) Or is there a way of looking this up within Windows? About those AMD cards, I still have a HD4870x2 lying around..might as well try that..
 
Thanks anyway :) Would be great to get it working again

You don't have to use a video card to test it. Try a 1x or 4x network card.

You'd have to find a PLX chip, and then bake it on. Not an easy task. Not impossible, but pretty close.

micahhiggs
You don't have to use a video card to test it. Try a 1x or 4x network card.

You'd have to find a PLX chip, and then bake it on. Not an easy task. Not impossible, but pretty close.

Hmm..a lot of effort but yeah.. where is that chip on the motherboard somewhere since google did not give me any tips.. i know i wouldn't need a videocard but i have no 1x or 4x pcix cards lying around :p

PS: I got your messege btw but I'm not yet able to send PM's due to EVGA's restrictions (must be at  least a member for 5 days etc.) But to answer it here; I'm from outside the US. Belgium to be exact :) I just got this board used and thought it would be an easy fix. The seller informed me of the problem. I saw a lot of sr-2's on USA's Ebay but I could not get it here since they were either not shipping it or de import taxes were to high. I bought mine from inside the EU.