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Thread: Strange RAM issue after moving PC

  1. #1
    Missed by us all - RIP old boy spacein_vader's Avatar
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    Strange RAM issue after moving PC

    This week I had to unplug and move my PC (full description in My Rig,) for 24hrs so we could have a new window fitted in the office. Upon putting it back it refused to POST. Initially I assumed a CMOS battery had died so I reset it and gave it a new battery, no dice. A bit of trial and error reseating bits led me to discover that it will boot fine as long as only 1 of the 2 memory DIMMs is present. This means I'm currently running 8gb of DDR4 in single channel only. Things I have tried that make no difference:

    1. Turning XMP off.
    2. Trying all available RAM slots/combinations of slots.
    3. Using a different pair of Crucial DDR4 2666mhz RAM.
    4. Reseating all components/cables.
    5. Updating BIOS.

    I'm at a loss. Any one slot with any one stick of any RAM works fine, any 2 and a black screen. Any ideas welcome! Worst case am I looking at a fault on the mobo?

  2. #2
    Banhammer in peace PeterB kalniel's Avatar
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    Re: Strange RAM issue after moving PC

    Check for damaged pins on the CPU/socket. These seem to lead to RAM problems, and they're the kind of thing that can happen if you've got a heavy heatsink hanging off it when you move a PC. Overtightening the HSF also can cause the same thing, but I'd remove the HSF to inspect and then refasten it carefully (with new paste) and not over tightly.

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    Re: Strange RAM issue after moving PC

    ... and check for physically damaged components on the memory stick.

    I once had some sticks with some tiny [capacitor/resitor] close to the top edge, and my thumb pressure when installing the module caused a single ~1mm-2mm component to crack slightly - it was barely visible, but it was cracked. This introduced BIOS timing errors for that stick.

    e.g.
    Last edited by smargh; 02-02-2022 at 06:30 PM.

  4. #4
    Missed by us all - RIP old boy spacein_vader's Avatar
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    • spacein_vader's system
      • Motherboard:
      • MSI B450 Tomahawk Max
      • CPU:
      • Ryzen 5 3600
      • Memory:
      • 2x8GB Patriot Steel DDR4 3600mhz
      • Storage:
      • 1tb Sabrent Rocket NVMe (boot), 500GB Crucial MX100, 1TB Crucial MX200
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      • Gigabyte Radeon RX5700 Gaming OC
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      • Corsair HX 520W modular
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      • Operating System:
      • Windows 10 Pro
      • Monitor(s):
      • BenQ GW2765, Dell Ultrasharp U2412
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    Re: Strange RAM issue after moving PC

    Followed the tips here and reseating the CPU seems to have done it. Thanks all!

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    kalniel (06-02-2022)

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