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 Commonly caused by faulty USB-C hubs, outdated motherboard BIOS, or degraded USB-C ports.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. Note any recent driver or hardware changes. If Windows cannot start, use the startup guide first.

Work through these checks

0 of 4 complete
01Perform a power cycle (discharge motherboard capacitors)

Perform a power cycle (discharge motherboard capacitors).

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 the motherboard BIOS and chipset firmware

Update the motherboard BIOS and chipset 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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03Reinstall USB Controller drivers in Device Manager

Reinstall USB Controller drivers in Device Manager.

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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04Unplug and reseat external hubs/displays

Unplug and reseat external hubs/displays.

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

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  • Outdated motherboard BIOS firmware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

Useful Windows tools

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

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