Software tool: Win8
Professional edition
1. Press win +x on the keyboard, and select Click in the menu to open "Command Prompt (Administrator)".
2. In the CMD window, enter bcdedit.exe? /setting? nointegritychecks? exist
After copying, right-click in the CDM window and select Paste.
3. After pressing Enter, if the prompt is successful, the verification will be disabled. Then, you can install unsigned drivers.
4. If you want to restore the verification driver, please enter bcdedit.exe in CMD? /setting? nointegritychecks? Press Enter to execute.
Note: You need to open the command prompt as an administrator to run the above command, otherwise you will be prompted "Unable to open the startup configuration data store. Access denied.