Method 1: Reinstall the USB controller
The USB controller is the interface to connect a USB device if it goes out of the way
In the Device Manager, the USB device will show that it is not recognized. I
We can try to solve this problem by reinstalling the USB controller.
1. Right-click on "This PC", then click on "Properties", and select "Device Tube".
processor, expand Universal Serial Bus Controller.
2. Right-click on the USB device with the yellow exclamation mark and tap
Uninstall.
3. When it is done, restart the computer, and the USB control will be installed automatically after booting up
Utensil.
Method 2: Disable the USB selective pause setting
USB selective pause settings are similar to the sleep mechanism of USB devices, such as:
If it fails, it may cause the USB device to sleep for a long time
use, resulting in an unrecognized problem.
1. Click on "Search" in the bottom left corner of the desktop, type in "Power Plan", and then
Click on "Choose a power plan".
2. Click "Change plan settings" next to the current plan, and then select "Change."
change the advanced power settings".
3. In the new pop-up window, open "USB Settings" > "USB Selectivity."
Pause Settings to set it to Disabled.
4. Click "Apply" > "OK", restart the computer after disabling it, and check
Check if the problem is resolved.
Method 3
1. Click "Search" in the bottom left corner of the desktop, enter "Device Manager", and then
After clicking on "Device Manager", find the USB with the yellow exclamation mark
Equipment.
2. Right-click on it and select "Uninstall".
3. After unmounting, unplug the USB device,
4. Wait for about 1 minute before reconnecting the USB device.
5. The relevant drivers will be loaded automatically, and then viewed in the "Device Manager".
Whether the problem is solved.
Method 4: Update or install a new motherboard driver
You can check the model of the motherboard of your computer and download the new one from the official website of the motherboard
The motherboard driver, or use the driver wizard, drive life and other driver software
to update the motherboard driver.
Method 5: Change the USB connection port
The power of the mobile hard disk is large and the voltage is strict, and the front interface may not be possible
Provide enough voltage, poor quality power supply can also cause problems. Solution
It is that the mobile hard disk should not be connected to the front USB interface, and the replacement is inferior and low-quality
power supply, etc.