When you see a yellow exclamation mark next to a PCI device under Other devices or Unknown devices in Device Manager, it means Windows knows something is connected through PCI, but can’t properly recognize the hardware because the driver is missing or not working. This is usually a straightforward issue to resolve – you just need to install the correct driver. In this guide, we’ll show you how to update the PCI driver to fix the yellow exclamation.
- What is a PCI device driver?
- Method 1: Update the PCI driver automatically (Recommended)
- Method 2. Update the PCI device driver manually
What is a PCI device?
A PCI Device isn’t actually the name of a specific piece of hardware. It refers to any hardware component, such as a motherboard chipset component, sound card, network card, storage controller, or wireless adapter, that connects to your computer’s motherboard through a PCI slot.
These devices rely on specific drivers to allow your operating system to communicate with them and ensure they function properly. Without the correct driver, your system may fail to recognize the device, resulting in errors like “Unknown Device” in Device Manager or a non-functioning component. In such cases, updating the right driver can restore the functionality.
Method 1: Update PCI driver automatically (Recommended)
Manually updating PCI device drivers can be frustrating. You’ll need to know which hardware component specifically is missing the driver. If you’re looking for a simpler and faster way, you can update your device driver easily and automatically with Driver Easy.
Driver Easy will recognize your system and find all the correct drivers your system needs. You don’t need to know exactly what driver is missing or out-of-date, what system your computer is running, and you don’t need to worry about downloading the wrong driver or making a mistake when installing. Driver Easy handles it all.
- Download and install Driver Easy.
- Run Driver Easy and click the Scan Now button. Driver Easy will then scan your computer and detect any problem drivers.
- Click Update All to automatically download and install the correct version of all missing or outdated drivers on your system.
This will prompt you to start the 7-day free trial or upgrade to the Driver Easy Pro version. Both options include automatic & high-speed driver updates, allowing you to improve your PC performance and stability easily.
- Restart your computer for the changes to take effect.
Method 2. Update the PCI device driver manually
In most cases, PCI Device errors are caused by missing chipset drivers. Chipset drivers help Windows correctly recognize motherboard-level components such as the PCI bus controller, SMBus controller, etc. You can get the chipset driver package from your motherboard manufacturer’s website.
Search for your computer model, find the chipset driver corresponding to your Windows version (for example, Windows 11, 64-bit), and download it. Then, double-click the downloaded file and follow the on-screen instructions to install the driver.
Check your Device Manager to see if the PCI Device with the yellow exclamation mark is gone. It should now appear under its proper category (such as Network adapters or Sound, video, and game controllers) without any error icons.
If not: the PCI devices (and the yellow exclamation mark) still appear, or there are remaining unknown devices, it might indicate a specific hardware component missing the driver, and you’ll need to install the exact driver for it. Here’s how:
- Open the Device Manager, expand Other devices, locate the problem device, and double-click it.
- Go to Details, select Hardware Ids from the drop-down box, and copy the first value.
You can paste the Hardware ID into a web search engine to identify the device. Then download the device driver directly from the manufacturer’s official website.
We hope this post has been helpful. If you have any questions or suggestions, feel free to leave a comment below. We’d appreciate it if you could click the thumbs-up button to show your support!
