An outdated BIOS can report the TPM incorrectly to Windows.
The "ACPI" prefix stands for , a standard that helps your operating system communicate with your hardware. The "IFX0102" part is the specific identifier for the Infineon TPM 1.2 chip . This chip provides hardware-level security, performing tasks such as: Storing encryption keys for Windows BitLocker. Authenticating system integrity during boot-up. Securely storing passwords and digital certificates. Why is the Driver Missing? acpi ifx0102
In this deep-dive article, we will unpack everything you need to know about . We will explore what it is, why it appears, the potential risks of ignoring it, and—most importantly—how to fix the error in Windows 10, Windows 11, and older versions of the OS. An outdated BIOS can report the TPM incorrectly to Windows
: For older machines like the HP EliteBook 8440p or HP Compaq 8000 Elite , you often need to manually download the Infineon TPM Professional Package or specific TPM 1.2 drivers from the manufacturer's support site. Why is the Driver Missing
The significance of ACPI IFX0102 lies in its ability to improve power efficiency, reduce heat generation, and enhance overall system reliability. By effectively managing power consumption and device configuration, ACPI IFX0102 helps to:
PNP0C31 is the official Plug-and-Play ID for a TPM. So IFX0102 is Infineon’s vendor-specific HID, while PNP0C31 is the generic class ID.
The IFX0102 uses Infineon’s TPM 1.2 firmware, which had a (CVE-2017-15361 / ROCA vulnerability) in the RSA key generation (2012–2017). If you used the TPM to generate RSA keys (e.g., for BitLocker or SSH), those keys were theoretically factorable by an attacker.
