What is the reason that the USB device cannot be recognized?

Many USB devices because of the virus and the user's irregular operation will often make their beloved things soon such or such a problem. Now I'd like to teach you a few tricks to solve the removable storage devices such as USB disk can not recognize small methods.

First we look at the data line is not intact, it is best to change a good try. Because the following method does not solve this problem that seems to be a problem rather than a problem.

Now let's look at the software solution:

1: U disk with the system of each USB connector, the frequency of about 1 minutes, can not recognize the replacement of other USB. The middle of the best is to restart the computer after testing, so that the computer is not the USB interface failure;

2: Will be a different confirmed is a good USB device (such as: USB mouse, U disk, keyboard camera, etc., as long as the hand can be inserted into the unrecognized interface.) This is to determine whether U disk and USB interface have trouble;

3: Reboot into BIOS. Check to see if USB is disabled.

4: If the last two methods are not recognized. Please reinstall the USB driver in System Device Manager to the motherboard driver, and note that the installation drive must reboot the computer. (Many users or computer city installed personnel are not restarted, because the driver problem is a direct impact on the system Blue Screen main factor)

5: Soft fault also ruled out, in the look of the system has no virus, of course, the virus will not affect the USB is not recognized. But use antivirus software to check. is the best.

The above methods are not possible, then try to reload the system, hehe. You can change the motherboard or add a USB small board.

Most users are always plug and play when using U disk, this will cause the USB interface aging faster, it is recommended to use U disk every time, fully identified and then open, remove the use of security. It is best to add a data extension cord.