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So I reset the cpu and it started showing all 4 sticks in quad channel within the bios but I can not get past the bios as it keep showing error code bd.

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Flashed the newest bios already will try resetting the cpu. I purchased both the cpu and motherboard off ebay, so I should send the motherboard back as faulty ? And any chance it could be the cpu or can only the motherboard cause this issue ?

Seem it only pick up all 4 if I put them all on the same side so a1, a2, b1, b2.

Updated the bios and still not able to get quad channel working.

Yea my bad I mean they work in every slot and every combination but when I put them in slots a1, b1, d1 ,c1 only 2 sticks of ram show up.

Also can we rule out cpu or motherboard issue ? As it picking them up in each slot and all 4 in all slots but not in a1, b1, d1, c1.

Will try updating the bios. I can get them to show up in the bios if I put them in a1, a2, b1, b2 but only 2 show up in a1, b1, c1, d1.

Hello, I am trying to get all 4 stick 8f 8gb ram to show up in the bios. I have them in A1, B1, C1, D1 but only 3 show up. I am using the asus x99-a motherboard + i7 5820k. Could it be because I have 2 3000mhz + 2 3200mhz ?

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