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TRX40 Creator - "Code 54" After Reboot

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Moose View Drop Down
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    Posted: 24 Apr 2021 at 9:27pm
ASRock TRX40 Creator + AMD Ryzen Threadripper 3970X Processor
BIOS 1.73 64GB (4x Kingston Server Premier KSM32ES8/16ME Memory 16GB 3200MHz DDR4 ECC CL22 DIMM 1Rx8 Micron - Part Number: Kingston 9965684-032.A00G (Micron)

PC always boots up fine from a cold start.
After a software initiated reboot (windows restart for example), the system will stay on a black screen and the red debug LED cycles through and stops on Code 54 which seems to indicate a memory issue. After a manual reboot using the hardware reset button, the PC boots up everytime.

I know this RAM is not on the official Memory QVL yet new but a very similar Kingston ECC is listed as supported (KSM26ED8/16ME). This issue might be a related to something else like a BIOS setting and I've tried various things.

PC has been stress tested (CPU, RAM, GFX) and no issues over the past 2 months. Just raising awareness of this to see if anyone else has the issue?
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ket View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ket Quote  Post ReplyReply Direct Link To This Post Posted: 26 Apr 2021 at 7:54pm
You can try;

1. Running HCI memtest to see if any errors are detected, let it run to at least 300%.
2. Increase memory voltage to 1.4v
3. Take 2 sticks out and see if you get the same problem
4. Did you get this issue with firmware 1.7? (non-beta release)
5. Look at the serial numbers on your memory, the final digits will be in sequence. Eg; 0314, 0315, 0316, 0317. Install the memory modules so they are all in order.
6. Try increasing tCWL and tRDWR to 16 or 18.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Moose Quote  Post ReplyReply Direct Link To This Post Posted: 28 Apr 2021 at 2:19am
Thanks for these ideas to try.

1. Already ran various memtest86 tests which took a long time and passed, unless there is something special about HCI memtest.
2. Tried voltage at 1.4v on all banks, no change.
3. Tried with 2 sticks, no change.
4. Yes, happened in 1.7 non-beta.
5. Moved them to be in order by serial number (assuming bank A2 is the first slot, B2 second, C2 third and D2 last for quad channel) - no change.
6. tCWL was already set to 18 by default, so tested at 22 and no change. Also increased tRDWR to 18 and no change.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ket Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 2021 at 5:15am
Have you tried disabling Gear Down mode and manually setting Command Rate to 2T? TRFC should already be set loose enough but you could try adding 50 or 100 to that and see if that helps as well.
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