Important Disclaimer: Before proceeding, it is crucial to understand that the "PCI Encryption/Decryption Controller" is not a generic component. It is almost always a specific hardware chip related to TPM (Trusted Platform Module) or a security coprocessor manufactured by companies like Intel, AMD, or Broadcom. There is no single "universal" driver for this device. Downloading a random driver from a third-party site can harm your system. Here is a full guide on how to identify, troubleshoot, and download the correct driver for the PCI Encryption/Decryption Controller in Windows 10.
How to Download and Fix PCI Encryption/Decryption Controller Drivers on Windows 10 If you have opened your Windows Device Manager and noticed a yellow exclamation mark next to a device labeled "PCI Encryption/Decryption Controller," it indicates that a piece of security hardware on your motherboard is not functioning correctly because the driver is missing or outdated. This device is typically responsible for hardware-based security tasks, such as BitLocker drive encryption or secure credential storage. Here is the step-by-step process to resolve the issue safely.
Phase 1: Identify the Hardware (The Critical Step) Because Windows 10 cannot identify the device on its own, you must force the system to tell you who manufactured it.
Right-click the Start button and select Device Manager . Locate Other Devices (or sometimes "System Devices") and find the PCI Encryption/Decryption Controller . Right-click the device and select Properties . Go to the Details tab. Under the "Property" dropdown menu, select Hardware Ids . You will see a value that looks like this: Important Disclaimer: Before proceeding, it is crucial to
PCI\VEN_8086&DEV_... (This indicates Intel) PCI\VEN_1022&DEV_... (This indicates AMD) PCI\VEN_14E4&DEV_... (This indicates Broadcom)
Note the VEN (Vendor) number. This four-digit code tells you exactly which company made the hardware.
Phase 2: How to Download the Driver Once you know the manufacturer (usually Intel or AMD for modern PCs), use one of the following three methods to get the driver. Method A: Use Windows Update (Easiest) Windows 10 often has the driver in its repository but fails to grab it automatically during the initial setup. Downloading a random driver from a third-party site
Go to Settings > Update & Security > Windows Update . Click Check for updates . If that does not work, click View optional updates . Look under the Driver updates tab. If you see a driver related to "TPM," "Security," or your specific chipset manufacturer, check the box and install it.
Method B: Use the Manufacturer’s Support Site (Safest) This is the most reliable method. You need the model number of your laptop or motherboard.
Go to the support website of your computer manufacturer (e.g., Dell Support, HP Support, Lenovo Support, ASUS Support). If you built the PC yourself, go to the motherboard manufacturer's site (e.g., MSI, Gigabyte, ASRock). Enter your Service Tag or Model Number . Navigate to the Drivers & Downloads section. Look for a category labeled Security or Chipset . Look for a driver named: then restart your computer.
Intel Management Engine Interface (MEI) AMD PSP Driver TPM Driver
Download and install the driver, then restart your computer.
