Are you feeling upset when you see a yellow warning icon or a question mark next to SM Bus Controller in Device Manager? Don’t worry, read this article and you can fix it easily.

Here are three ways to update your SM Bus Controller driver for Windows. You may not have to try them all. Just work your way down the list until you find the one that works for you.

  1. Update your driver manually
  2. Update your driver with Device Manager
  3. Update the driver automatically

What is the SM Bus Controller?

The SM Bus Controller is a chipset on the motherboard. Its main purpose is to monitor the voltage and temperature of the motherboard. If you see a question mark in front of the SM Bus Controller, it indicates that the hardware is not recognized by Windows. A yellow warning icon in front of it indicates that the SM Bus Controller is not installed or the driver is not installed correctly.

Method 1: Update your driver manually

To update your driver manually, you need to download the driver file from its official website and then install it on your computer on your own. 

1) Visit Intel’s official website and click Support.

2) Click Download Drivers and Software.

3) Type Intel Chipset Software Installation Utility and press Enter.

4) Click Download type to select Driver, and then click Operating system to select the operating system you are currently using from the drop-down list.

5) Download the driver file to your computer and follow the on-screen step-by-step instruction to install it manually.

Method 2: Update your driver with Device Manager

You can also update your driver with Device Manager. Here’s how to do it.

In this method, A driver CD that comes with your motherboard or computer is required.

1) Insert your driver CD that comes with your motherboard or computer into the CD Drive.

2) On your keyboard, press the Windows logo key and R at the same time to open the Run dialog, then type devmgmt.msc and press Enter on your keyboard.

3) Double click Other device to expand the list, right click SM Bus Controller and then click Update driver.

4) In the pop-up window, click Browse my computer for driver software

5) Click Browse… to locate your driver CD, and then click NextThe system will search and install the correct driver for your PC.

Method 3: Update your driver automatically

If you don’t have the time, patience or computer skills to update the driver for your SM Bus Controller manually, you can do it automatically with Driver Easy.

Driver Easy will automatically recognize your system and find the correct drivers for it. You don’t need to know exactly what system your computer is running, you don’t need to risk downloading and installing the wrong driver, and you don’t need to worry about making a mistake when installing.

You can update your drivers automatically with either the FREE or the Pro version of Driver Easy. But with the Pro version it takes just 2 clicks (and you get full support and a 30-day money back guarantee):

1) Download and install Driver Easy.

2) Run Driver Easy and click Scan Now. Driver Easy will then scan your computer and detect any problem drivers.

3) Click Update next to the device whose name contains “SM Bus Controller” to automatically download the correct version of this driver, then you can install it manually. Or click Update All to automatically download and install the correct version of all the drivers that are missing or out of date on your system (this requires the Pro version – you’ll be prompted to upgrade when you click Update All).

You can do it for free if you like, but it’s partly manual.
If you have any issue with Driver Easy, please contact Driver Easy’s support team at for advice. You should attach the URL of this article so they can help you better.
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