Drivers · medium

How to fix0x000001D4

UCMUCSI_LIVEDUMP

What this error means

This medium-severity issue affects the system driver. The USB Connector Manager UCSI driver detected a hardware or connection timeout in the USB-C Type-C controller firmware. Commonly caused by faulty USB-C hubs, outdated motherboard BIOS, or degraded USB-C ports. It sometimes comes down to conflicting external Thunderbolt/USB-C dock. Work through the steps below in order.

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 4 complete
01Perform a power cycle (discharge motherboard capacitors)
  1. Perform a power cycle (discharge motherboard capacitors)
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.

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02Update the motherboard BIOS and chipset firmware
  1. Update the motherboard BIOS and chipset firmware
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
03Reinstall USB Controller drivers in Device Manager
  1. Reinstall USB Controller drivers in Device Manager
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
04Unplug and reseat external hubs/displays
  1. Unplug and reseat external hubs/displays
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

  • USB-C Type-C port controller timeout
  • Outdated motherboard BIOS firmware
  • Conflicting external Thunderbolt/USB-C dock
  • Degraded physical USB-C port connection

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