Memory · critical

How to fix Instability at Command Rate 1T

Error code: 1T-CMD-FAIL

What this error means

The memory controller does not have time to process commands with a delay of only 1 clock.

Updated

Before you begin

Save open work and back up important files. Use instructions for your exact device and software version. If Windows cannot start, see the startup guide.

Work through these checks

0 of 3 complete
01Disable XMP profile in BIOS
  1. Disable XMP profile in BIOS
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors
02Clean the RAM contacts with a school eraser
  1. Clean the RAM contacts with a school eraser
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors
03Update BIOS for better compatibility
  1. Update BIOS for better compatibility
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors

Possible causes

  • Different modules in one board
  • Poor quality CPU controller
  • Frequency too high
  • Dust in slot

Useful Windows tools

These commands open Windows tools. Review changes before applying them.

mdsched.exe