Memory · critical

How to fix0x0000002E

DATA_BUS_ERROR (0x2E)

What this error means

0x0000002E shows up as a critical-severity system memory (RAM) fault. A DATA_BUS_ERROR occurs when a parity error in system memory is detected, indicating memory bus communication failure. Most commonly caused by defective RAM modules, dusty DIMM slots, motherboard trace damage, or failing processor cache. It's also often linked to oxidized RAM gold finger connector pins. Use the steps below to track down and fix the cause.

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 4 complete
01Clean RAM gold contacts using a soft eraser

Clean RAM gold contacts using a soft eraser.

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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02Reseat RAM modules firmly in DIMM slots A2/B2

Reseat RAM modules firmly in DIMM 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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03Test memory blocks using MemTest86 diagnostic tool

Test memory blocks using MemTest86 diagnostic tool.

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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04Disable XMP/EXPO profiles to check clock stability

Disable XMP/EXPO profiles to check clock stability.

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

  • Defective RAM module hardware memory corruption
  • Oxidized RAM gold finger connector pins
  • Corrupt motherboard memory traces or controller
  • L2/L3 processor cache memory read exceptions

Useful Windows tools

These commands open Windows tools. Review any action inside the tool before applying changes.

mdsched.exe