BIOS & startup · critical

How to fixDRAM Light (Q-LED)

DRAM Light (Q-LED)

What this error means

DRAM Light (Q-LED) is a critical-severity hardware BIOS/UEFI problem. The motherboard POST diagnostic LED indicates a memory initialization error, preventing the system from booting. 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
01Reseat memory modules in slots A2/B2

Reseat memory modules 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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02Test system with a single memory module

Test system with a single memory module.

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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03Clean memory contacts with an eraser and blow out slots

Clean memory contacts with an eraser and blow out slots.

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

  • Memory module not fully seated
  • Incompatible memory module configuration
  • Defective memory slot on the board