Unrecognized usb device users often encounter such problems, and now we have more and more USB devices around us, then we can not identify the usb device failure solution, unrecognizable usb The summary of equipment processing methods brings together the most complete USB device processing methods, and hopes to help the users of Rainforest Woodwind.
1. The front USB cable is connected incorrectly. This type of fault occurs when the USB cable on the motherboard and the front USB interface on the chassis are connected. This is also quite dangerous, because the positive and negative connections may cause the USB device to burn out. Therefore, try to use the USB interface on the rear of the chassis, and use the extension cable less. It may also be a problem with the fracture. Look at the USB port.
2. The USB interface voltage is insufficient. When the mobile hard disk is connected to the front USB port, there is a possibility that the system cannot recognize the device failure. The reason is that the power of the mobile hard disk is relatively large, and the voltage is relatively strict. The front interface may not provide enough voltage. Of course, a poor quality power supply may also cause this problem. The solution is to not connect the mobile hard disk to the front USB port, replace the inferior low-power power supply or use the hard disk box of the external power supply if possible.
3. Motherboard and system compatibility issues. Hehe, the most famous of these faults is the compatibility of NF2 motherboard and USB. If you are experiencing this problem on the motherboard of NF2, you can install the latest nForce2 dedicated USB2.0 driver and patch, the latest motherboard patch and operating system patch, or try to refresh the BIOS of the motherboard. Can solve.
4. System or BIOS issues. When you disable USB in the BIOS or operating system, it will happen that the USB device cannot be recognized in the system. The solution is to turn on the options associated with the USB device. Just press the F2 or DEL button to enter the BIOS and enable the enable usb device.
5. Be careful when plugging in, do not pull out when reading or writing, otherwise it may burn the chip. In the XP taskbar, there is more USB device icon. When you open the icon, the U disk device will be displayed in the list. Select to disable the device, and then you can pull out the device, which is safer.
In fact, the software hardware problem is very simple, try it on another machine or change the system. Some small problems may be formatted with special software first. Also remind everyone to choose FAT when formatting under WINDOWS. Do not choose FAT32.
Prompt for unrecognized USB device repair
Failure prompt as shown:
Unrecognized USB device: Unknown USB Device. A problem that many people have encountered, the so-called <;Unrecognized&rdquo For the operating system, there is a problem with the degree of driving, or there is a problem with the USB device, or the connection between the computer and the USB device has failed, and the solution to the problem is also from these several places.
There will be different treatments for different devices. Knowing the conditions required for the USB device to work properly and some factors that may affect the normal operation of the USB device will help solve the problem.
The following are some conditions to ensure that the USB device can work normally: (1) The USB device itself has no problem —— can be tested on other computers to ensure normal operation; (2) USB interface has no problem —— can be tested on this interface by connecting other USB devices; (3) The driver of the USB device has been correctly installed. If there is a USB device with detailed instructions, be sure to carefully check the corresponding documentation and follow the instructions. The corresponding driver; Windows 2000 and later operating systems to identify most of the USB devices, Windows 98 before the operating system can install the USB device comes with a driver or install a universal USB device driver.
The following are some situations that may affect the normal operation of the USB device: (1) The USB device has failed (the same conditions can be used normally, and now there is a problem); (2) There is a problem with the USB interface, such as a. The polarity of the USB front interface is reversed, which may cause the USB device to burn out. Therefore, you must carefully look at the motherboard manual to prevent misconnection. b. The interface voltage is insufficient. Some mobile hard disks often have such problems. The USB interface behind the host often It will be more reliable than the front USB interface; c. There is a problem with the compatibility of the motherboard and the operating system. Installing the latest motherboard driver can avoid such problems to the greatest extent; d.Bios prohibits USB devices, possibly by changing the BIOS. The corresponding settings are resolved; e. Operating system problems can be solved by reinstalling the operating system; (3) There is a problem with the USB driver: If you suspect that there is a problem with the driver, you should ensure that the latest driver for the corresponding model of the device is installed or Make sure the operating system does not require a special driver. The latest drivers can be found on the home page of the online device manufacturer.
When there is a problem with the USB device, in addition to finding a solution based on the actual error message, it is also necessary to carefully check the specific brand, model, and manufacturer of the USB device, and include this information in the search results to make it easier to find. The corresponding solution. Like some plugged and unplugged USB devices that are often in a connected state temporarily fail, the operating system keeps appearing "unrecognized USB devices", such an annoying prompt, you can temporarily turn off the universal serial bus in the device manager. The corresponding USB port in the controller or the corresponding USB device is disabled.