Solution 1. The premise of using usbkey is that a circular icon with CCB logo in blue on white background will appear on the screen of the machine used, and then insert usbkey, so that the machine will recognize and check the certificate. In addition, when using usbkey normally, do not initialize it under the icon. Once initialized, the certificate will not exist. If your CCB U shield doesn't respond, it may be that the machine doesn't have a special tool for usbkey or there is something wrong with the installation of the tool, so it needs to be uninstalled at the center. Solution 2. If there is no response after your CCB U shield is plugged in, first check whether you have downloaded the "China Construction Bank E Road Escort Online Banking Security Component (Grip)", click Install after downloading, and there will be a response in the lower right corner. If yes, check the antivirus software to see if it is banned; If not, you have to go to the bank to re-sign, and you have to go to the CCB website to download this component every time you reinstall the system. If everything is installed and there is still no response, go to the bank and sign a new contract. It is possible that you have reinstalled the system before, or there is something wrong with the certificate, which will lead to the invalidation of the certificate in the U shield. Solution 3. There is no response when the U shield of China Construction Bank is plugged in. If you can use CCB Silver Shield normally on other people's computers, it means that this situation is caused by the computer settings you use. If you are using IE8.0, please check whether the browser is 64-bit or 32-bit, and try to use both browsers. If you still can't operate successfully, I suggest you consult a computer professional or use another computer.