A yellow exclamation mark appears on the SM bus controller in win7 system

Right-click "SM Bus Controller" in the opened device manager and select Properties

In the pop-up " In the SM Bus Controller Properties dialog box, select "General" - Reinstall the driver

In the pop-up "Hardware Update Wizard" dialog box, select "Automatic installation" Software", you can automatically search for software from the Internet or your computer

In the pop-up "Hardware Update Wizard" dialog box, select "Install from a list or specified location", you can Install the driver in the path you define

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