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Thread: fails memtest86

  1. #1
    Join Date
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    Ubuntu 11.10 Oneiric Ocelot

    fails memtest86

    I just put together a new desktop system and installed Ubuntu 9.04. Was getting random lockups and reboots so I ran memtest86. It indicates memory errors:

    My MoBo has four slots and I have four memory modules.

    • Each module individually in slot 1 - they each pass memtest86
    • Two modules in slots 1 & 3 - fail
    • Two modules in slots 2 & 4 - pass
    • Four modules - fail

    Sounds like there is something wrong with my MoBo.

    Should I return the MoBo to Newegg?
    Intel Core 2 Duo E8400 3.0GHz, 4GB DDR2 SDRAM 1066, GIGABYTE GA-EP45-UD3L Mobo, NVIDIA GeForce 9400 GT 512MB, Seagate Barracuda 1TB SATA 3.0Gb/s HDD

  2. #2
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    Re: fails memtest86

    Is your BIOS updated?

  3. #3
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    Re: fails memtest86

    My bios version is 1.0, which I believe is what's current according to Gigabyte
    Intel Core 2 Duo E8400 3.0GHz, 4GB DDR2 SDRAM 1066, GIGABYTE GA-EP45-UD3L Mobo, NVIDIA GeForce 9400 GT 512MB, Seagate Barracuda 1TB SATA 3.0Gb/s HDD

  4. #4
    Join Date
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    Re: fails memtest86

    Sounds like a motherboard issue to me. I'd double check that all the BIOS settings relating to memory are correct for your RAM though, they can be sensitive to that.
    100 buckets of bits on the bus,
    100 buckets of bits,
    Take one down, short it to ground,
    FF buckets of bits on the bus.

  5. #5
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    Re: fails memtest86

    Quote Originally Posted by Whiffle View Post
    Sounds like a motherboard issue to me. I'd double check that all the BIOS settings relating to memory are correct for your RAM though, they can be sensitive to that.
    What do you mean?
    Intel Core 2 Duo E8400 3.0GHz, 4GB DDR2 SDRAM 1066, GIGABYTE GA-EP45-UD3L Mobo, NVIDIA GeForce 9400 GT 512MB, Seagate Barracuda 1TB SATA 3.0Gb/s HDD

  6. #6
    Join Date
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    Re: fails memtest86

    Some RAM works best or only works with certain timings, voltage settings, etc. It should be marked either on the RAM you have, or on the package it came in. These settings go into the BIOS. Getting these all set correctly might improve the situation.

    However, I think its more likely that your motherboard is the problem because presumably it was working before, and now its not.
    100 buckets of bits on the bus,
    100 buckets of bits,
    Take one down, short it to ground,
    FF buckets of bits on the bus.

  7. #7
    Join Date
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    Ubuntu 11.10 Oneiric Ocelot

    Re: fails memtest86

    RAM says 2.0 to 2.1 volts. The default settings in the bios are set to "auto", including the RAM voltage, so I'm going to leave the bios unchanged.

    Both the motherboard and ram are new. Although the freezes and lockups have been intermittent, they have occurred since the beginning.

    I think it's the motherboard too, especially since the ram modules test fine in all but slot 3 of 4 on the motherboard (see my original post). Doesn't that sound like slot 3 is bad?
    Intel Core 2 Duo E8400 3.0GHz, 4GB DDR2 SDRAM 1066, GIGABYTE GA-EP45-UD3L Mobo, NVIDIA GeForce 9400 GT 512MB, Seagate Barracuda 1TB SATA 3.0Gb/s HDD

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