The reason and solution for the usb camera is not recognized
Usb devices are becoming more and more common, almost all devices have a trend of usb, such as printers, cameras, mp3, mp4, readers, but many times, we use usb devices is not so smooth. Frequently there is a "unrecognized usb device" prompt, then why is this prompt, how to solve it? Next, Xiaobian will introduce you to the reasons and steps that the usb camera does not recognize:
      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 usb camera can not identify the solution is not to connect the mobile hard disk to the front USB interface, replace the inferior low-power power supply or try to use the external power supply hard disk box, if available.
      3. Board 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 you can try to refresh the BIOS of the motherboard. Can solve.
      4. System or BIOS issue. 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 removing and inserting. 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.
      The above is the reason and solution that the usb camera can't identify, I hope to help everyone.
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