When using a computer, most peripherals, such as mice, keyboards, and USB flash drives, need to be connected via a USB interface. However, some users have encountered problems where Windows cannot recognize these USB devices . Below are some solutions.
Method 1: Restart your computer
When your computer fails to recognize a USB device, first check if the connection cable between the device and the computer is loose; try unplugging and plugging it back in. Also, try plugging the device into another USB port on the computer to see if it is recognized. If the problem persists, restart your computer.
Method 2: Update the driver
A common reason why a device might not be recognized is a driver issue. Computers rely on drivers to communicate with hardware devices, and faulty or outdated drivers can cause devices to malfunction. To quickly pinpoint the problem, it’s recommended to use software like ” Driver Life ” to automatically detect and repair computer driver issues.
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Downloads: 5,281,994- After installing and opening Driver Life, click ” Driver Management > Scan Now “;
- After the scan is complete, the software will detect if there is an available USB driver update. If so, click ” Update Driver “
- If updating the driver doesn’t work, try uninstalling the current driver and reinstalling it. Right-click the ” Start” menu, select “Device Manager ,” expand ” Universal Serial Bus controllers ,” right-click your USB device, select “Uninstall device ,” and then open Driver Booster to re-detect and install the driver.
Method 3: Check the USB Root Hub
- If updating the driver doesn’t work, you can find ” USB Root Hub” or ” USB Root Hub ” under ” Universal Serial Bus controllers” in ” Device Manager” .
- Right-click on each USB Root Hub and select ” Properties ” -> ” Power Management “.
- Uncheck ” Allow the computer to turn off this device to save power “.
- Repeat this process for all USB Root Hubs in turn.
Why do this? Because to save power, Windows sometimes automatically shuts off power to USB ports, causing devices to become unrecognizable. Disabling this option ensures that USB ports are always powered.
Method 4: Check power supply issues
Some high-power USB devices (such as external hard drives, external optical drives, and certain USB sound cards) require a large current. This is especially true for laptop USB ports, which have limited power supply capabilities.
The solution is also very simple:
- If the device has an external power adapter, be sure to connect it before trying.
- Use a USB hub with independent power supply.
- Laptop users are advised to use the power adapter instead of battery power, as the system may limit the output current of the USB ports in battery mode.
- Desktop users can also check the power management settings: Control Panel -> Power Options -> Change plan settings -> Change advanced power settings , find ” USB settings ” -> ” USB selective pause settings “, and set it to ” Disabled” .
The above are the solutions for unrecognized USB devices. Hopefully, this will be helpful. If you encounter problems related to network card, graphics card, Bluetooth, sound card, or other drivers, you can download ” Driver Life ” to detect and repair them.
