P6X58D Premium -- A1 RAM slot dead?

MB: Asus P6X58D Premium
RAM: OCZ Gold 1600 3x2 GB OCZ3G1600LV6GK(on compatibility list)
Processor: Intel Core i7-930
Cooler: Cooler Master Hyper 212
Case: Cooler Master HAF 922
PSU: Corsair HX850
Video: Sapphire Radeon 5830
HD: Velociraptor 150GB


So I put this build together last night and it booted up and everything seemed fine(haven't installed an OS yet) with the exception that the BIOS was only detecting 4GB of RAM, while I have 6GB installed.

The motherboard's manual says I can use one stick in A1/B1/C1 to boot. I have tried every stick of RAM in the C1 slot, and they all detect fine by the BIOS as 2 GB. I did the same experiment in the B1 slot, worked. One stick in C1, one in B1 -- 4GB detected, cool.

I tried booting with just one stick in the A1 slot... no display whatsoever.

So it's looking to me like my A1 slot is dead.

I read around that other people have this issue with this motherboard. Some people said it can be caused by a short. I'm worried that the Hyper 212 might be shorting the motherboard. The backplate had insulating tape on it that seemed okay, but are the front standoffs non-conductive metal? They're directly on the motherboard with no tape/film on them.

I also had trouble installing the Hyper 212 in the HAF 922 case without removing the motherboard, because the hole in the back of the motherboard tray was too small to fit the backplate. I don't think this should cause an issue, the backplate is not touching the case(barely, but it shouldn't matter because the backplate shouldn't be running any electricity anyways).

Any ideas? I got the P6X58D Premium open box from Newegg so I think I'm screwed on that front :(
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  1. It's highly recommended to install large aftermarket HSF's by removing the MOBO, regardless of what the case manufacturer says.

    Besides that, it does sound like a bad memory slot. Why not use the other 3 slots? A2/B2/C2 (I'm assuming those are the names, don't recall the naming scheme off the top of my head)
  2. banthracis said:
    It's highly recommended to install large aftermarket HSF's by removing the MOBO, regardless of what the case manufacturer says.

    Besides that, it does sound like a bad memory slot. Why not use the other 3 slots? A2/B2/C2 (I'm assuming those are the names, don't recall the naming scheme off the top of my head)


    The manual only mentions installing triple channel via A1/B1/C1. Would it actually work in A2/B2/C2?
  3. For some odd reason, the MOBO manual isn't available online so I can't take a look. However, just plug em in and give it a try, usually isn't an issue.
  4. I meant to try your advice but after reading some other forums I saw that a bent CPU pin is often the cause of this... so I got a little over eager :)

    I look at the board really closely with a flashlight and sure enough a pin was bent out of place. I used a needle to put it back in line and everything's groovy now in the A1,B1,C1 slots and I get all 6 gigs recognized at 1600 mhz :)

    Thanks!
  5. My guess is that you have a bent CPU pin .... kidding :)

    Glad it worked out for you.
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