1. Please go here /xl7.9/intro.html to download Thunder again, and then uninstall and reinstall it. (Be sure to uninstall and reinstall to avoid covering up the old problems.

Download records can be saved. Go to My Computer-Control Panel-Uninstall to uninstall, and you will be prompted whether to keep the download history in the middle of uninstallation. Click Yes,

and then install on the same location.)

2. If there is still no response after double-clicking the installation package.

① Right-click the installation package-Properties-Digital Signature-after selecting the middle date-click View Details, and then check whether the prompt that the digital signature is normal is displayed in the pop-up box. If it is not normal,

it means that there is a problem with the installation package and it needs to be downloaded again.

②win7 system, please right-click the installation package and choose to run the attempt as an administrator.

③ Restart the computer and press F8 to enter safe mode for installation.

3. If it still doesn't work, it's usually blocked by some software or some files in the system environment are damaged. You can directly try to install it with 36 software manager or something. If it doesn't work, it's recommended to reinstall the computer system.

for more questions, you are welcome to ask the thunder network platform.