The yellow exclamation mark next to certain device problem can usually be fixed with an appropriate and matched device driver.ġ) On your keyboard, press the Windows logo key and R at the same time, type devmgmt.msc and press Enter.Ģ) If you can see clearly the name of the PCI device as the screen shot shown below ( PCI Simple Communications Controller), just go to the manufacturer website of your computer and search for the exact driver from there. Update PCI device driver via Device Manager Method 3: Update PCI device driver Automatically (Recommended) Method 1. Method 2: Update PCI device driver Manually Method 1: Update PCI device driver via Device Manager Note: The screen shots below are shown on Windows 7, but all fixes apply to Windows 10 and Windows 8 as well.

If these device drivers fail to work properly, your PC suffers. The PCI device you see in Device Manager indicates the piece of hardware that plugs into your computer’s motherboard, such as PCI Simple Communications Controllers and PCI data Acquisition and Signal Processing Controller as shown in the above screen shot. These are the hardware devices that keep your PC running smoothly. PCI stands for Peripheral Component Interconnect. Here are 3 solutions for you to choose.You may not have to try them all just work your way down until you find the one works for you. But no worries, it’s possible to fix, however horrifying the scene looks. Many Windows users are reporting about this problem. If you see a yellow exclamation mark next to one of your PCI drivers listed under Other devices or Unknown devices in the Device Manager, and you have no idea what to do, you’re not alone.

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