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Thread: 16gb RAM caps as 8gb in bios. (4x4gb) in an asus p8z77-v

  1. #1
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    • Legan's system
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    Unhappy 16gb RAM caps as 8gb in bios. (4x4gb) in an asus p8z77-v

    I have 4x4GB sticks of RAM in my machine. However in BIOS it only see's 8GB total. CPU-Z and BIOS SPD info both show 4 sticks of 4gb ram installed.

    RAM passes memtest. All work separately and in every DIMM slot. 1 Sticks gives 4gb max, 2 gives 8gb, 3 gives 8gb, 4 gives 8gb. No way around it capping at 8GB. I have tried manual timings and resetting bios and updating it.

    I am assuming then my memory controller on my i7 has failed somewhat (despite intel diagnostic showing a pass). If so, would 2x8GB ram work in my machine? If the memory controller can no longer run more than 2 sticks. If there's no true evidence of the memory controller failing. I assume there's nothing I can do about it.

    Any thoughts on this bug would be appreciated.

    PC Specs:
    i7 3770k
    Asus P8Z77-V
    Corsair Vengeance LP RAM.

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    Re: 16gb RAM caps as 8gb in bios. (4x4gb) in an asus p8z77-v

    what os you running ?? xp and some 7's limit mem to 8 gig ..
    What does it matter now if men believe or no?
    What is to come will come. And soon you too will stand aside,
    To murmur in pity that my words were true
    (Cassandra, in Agamemnon by Aeschylus)

    To see the wizard one must look behind the curtain ....

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    Re: 16gb RAM caps as 8gb in bios. (4x4gb) in an asus p8z77-v

    Quote Originally Posted by flearider View Post
    what os you running ?? xp and some 7's limit mem to 8 gig ..
    How would that affect the BIOS? (before it's loaded the OS)

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    Re: 16gb RAM caps as 8gb in bios. (4x4gb) in an asus p8z77-v

    Check the pins in the CPU socket.

  5. #5
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    • Legan's system
      • Motherboard:
      • Asus p9z77-v
      • CPU:
      • i7 3770k
      • Memory:
      • Vengeance 16gb
      • Storage:
      • 256GB SSD, 2TB HDD, 3TB HDD Backup
      • Graphics card(s):
      • GTX 660Ti
      • PSU:
      • BeQuiet 1200w
      • Case:
      • Corsair 550D
      • Operating System:
      • Windows 8 64bit
      • Monitor(s):
      • 2x LG 23" LED. LG 42" 3DTV

    Re: 16gb RAM caps as 8gb in bios. (4x4gb) in an asus p8z77-v

    I have had a look and no specific pin stands out as so bent it won't make contact. Im not entirely sure what they normally look like nor great at spotting these things so I grabbed some photos:

    http://imgur.com/cQhelJJ
    http://imgur.com/lbvcGSh
    http://imgur.com/CPtujV1
    http://imgur.com/e6DhznK

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    Re: 16gb RAM caps as 8gb in bios. (4x4gb) in an asus p8z77-v

    Update bios??..check ram and slots? To make sure working individually?

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