Memory · high

How to fixDRAM_POST_TIMEOUT

DRAM Training Timeout / POST Loop

What this error means

DRAM Training Timeout / POST Loop ranks as a high-severity system memory (RAM) issue in our database. The motherboard BIOS takes an excessive amount of time training the DDR5 memory channels on boot, eventually timing out and reporting a POST failure or resetting the memory frequency back to 4800MHz. See the troubleshooting steps below for the fix.

Before you begin

Save open work and back up important files. Note any recent driver or hardware changes. If Windows cannot start, use the startup guide first.

Work through these checks

0 of 3 complete
01Enable 'Memory Context Restore' and 'Power Down Mode' in BIOS DRAM settings

Enable 'Memory Context Restore' and 'Power Down Mode' in BIOS DRAM settings.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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02Update motherboard BIOS firmware

Update motherboard BIOS firmware.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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03Verify RAM is in slots A2/B2

Verify RAM is in slots A2/B2.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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Possible causes

  • DDR5 memory controller limitations
  • Incorrect memory slot population
  • Outdated motherboard BIOS microcode