USB Type-C port on laptop suddenly fails to charge the battery or output video? Please reinstall the UCM-UCSI ACPI device
2023/01/12 ｜By G Editor
More and more new laptops are equipped with USB Type-C ports that can transmit power, data, video signals synchronously, even replacing the traditional DC connecter as its power-in connecter. However, the power and data transmission function of USB Type-C depends on the system driver software. If a laptop suddenly fails to charge battery or transfer video signals externally via USB Type-C, it may be due to a driver error in managing the USB Type-C device, please follow the steps below to troubleshoot.
Step 1 Check the Status of UCM-UCSI-ACPI device
Open Control Panel>>Devices and Printers>>Device Manager, and check if there is an exclamation mark or fault symbol on UCM-UCSI ACPI device.
Step 2 UninstallUCM-UCSI-ACPI Device
A simple device error can be fixed by disabling the device and reactivating it, but we recommend you to solve the error fundamentally - "uninstall the wrong device, reboot the laptop and let the system install its own drivers for the device".
Disable Device: Right-Click >> select [Disable Device]
👍Uninstall device: Right-click >> select [Uninstall Device]
Step 3 Restart Windows System
After unplugging the power cable and USB-C cable, reboot the computer. Plug the power cable and USB-C cable back in and the USB Type-C port function should be back to normal-- the laptop battery is charging and the USB-C video is being output to the external monitor.
Ａ.If the above steps do not clear the fault condition of the UCM-UCSI ACPI device, it may be caused by the driver incompatibility with Windows updates.
Method 1: Please update Windows to the latest version first. Check and update to the latest BIOS/driver from the laptop manufacturer. And confirm the status of the UCM-UCSI ACPI device after rebooting the computer.
Method 2: After removing the power cable and USB-C cable, turn off the computer. Press and hold the power button for about 20~30 seconds, then reboot the computer and check whether UCM-UCSI ACPI device is back to normal.
B. If UCM-UCSI ACPI device does not show a fault message and the USB-C port is not functioning properly, e.g. no image output, it is possible that Windows has turned off the USB port to conserve power, please refer to the following article to uncheck the power management option from USB Controllers and reboot the system.