ASUS Maximus VI Hero PCIEX1_1 not working

Sonic557

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Apr 16, 2014
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Hey guys,
I recently bought an ASUS Maximus VI Hero PCIEX1_1 for an SLI build with a PCIE sound card (Xonar Xense). The top PCIE 1x slot (PCIEX1_1, precisely) doesn't seem to work for the sound card as nothing gets detected. It works fine in the second x1 slot so I know the card is good, however if I put it in the second x1 slot the card itself blocks the fan of one of my GPU which hinders airflow and can raise its temperature real high, which is a problem. And since I'm using SLI, the second card blocks the third x1 slot. So my only option is to use the first x1 slot, which is not working. I googled around a little bit before posting this and people say for mobos there are certain BIOS settings that either enable or disable certain PCIE slots. The only noticeable thing I found about this mobo is that if the 4_3 slot is set to x4 speed, 1_1/2/3 will be disabled. So I have made sure it's set to x1 speed, and 1_2 is working, but 1_1 is not. No other component is broken because I have tested them on another motherboard and they are all running fine. Can someone help?
 
Solution
Do you have the latest BIOS? Latest Drivers for the card....Odd, because I have the Hero also, 2 780s in SLI and am running a TV tuner card in the top X1 slot - all is fine....

Sonic557

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Apr 16, 2014
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Sorry to say this but your reply is not being helpful here... If I wanted to buy a new motherboard I wouldn't be posting this thread here, I would just go buy a new motherboard. The fact is I got this mobo yesterday and came to Tom's Hardware for a quick solution. Buying a new motherboard is only my last resort option. Not to mention the A7V400-MX only has two memory slots, but I need all 4 to make the 32GB to work.
 

Sonic557

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Apr 16, 2014
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Hi Tradesman1,

Thanks for the reply! I tried clearing CMOS but it didn't work. I expected so because I've been having this problem since I got it fresh out of the box, and clearing CMOS merely set it to default. I've done some googling around and this seems to be a common design problem. Someone with an ASUS Z87 Sabretooth had the EXACT same problem! I don't know if this is against forum rules but here's the link: http://forums.whirlpool.net.au/forum-replies.cfm?t=2149179&p=-1&#bottom
Apparently for the sabretooth they are making a bios update to solve this problem and they provided a temporary solution. However their solution doesn't work in my bios because I simply don't have their option. :(
 

Sonic557

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Apr 16, 2014
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Hi Tradesman1,

Thanks for your reply again! I just got it working! I did it by re-installing the driver for the sound card. I think it worked because during the installation the driver detects the card somehow. Glad I tried re-installing the driver as you suggested! I thought that it wouldn't work because the driver was previously installed on my computer! :