Win7 can't identify the device. Why can't the U disk read out? How to solve

Win7 computer can't recognize the solution that the device U disk can't read.

The steps are as follows:

First, replace the USB interface

1, the notebook's USB interface is still more, this interface can not change one.

2, maybe the USB interface problem can not read the U disk.

Second, the anti-virus U disk

1, U disk is infected with the virus, it will affect its normal reading.

2, first turn off the security protection, and then select the computer's management software to kill it, it is not only able to format the operation, provided that there is no important information in the U disk.

Third, restart the computer

If you use any external device before using the USB flash drive, it may cause the reading to fail and the new device (U disk) cannot be identified.

IV. Hardware Device Detection

1. Open the computer control panel and click Troubleshooting.

2, then click on the hardware and device configuration device.

3, then click on the hardware connected to the computer and the next step in accessing the device.

4, then the system automatically detects what has been done so that the U disk device can not be read.

5, after the problem is detected, there will be a prompt, according to the display processing corresponding changes.