In some OEM hardware configurations, these chipset drivers contain the structural inf files required to properly map out the ACPI subsystem bus so that Windows 7 knows exactly what the hardware ID represents. Alternative: Force Manual Driver Assignment
While a missing TPM 2.0 driver will not crash your operating system, it leaves an unsightly error in Device Manager and prevents Windows 7 from utilizing modern hardware-based security features like BitLocker drive encryption. Method 1: Install the Official Microsoft Hotfix (KB2920188)
The Acpi Msft0101 driver is a crucial system driver that facilitates communication between the operating system and ACPI (Advanced Configuration and Power Interface) devices. Specifically designed for Windows 7, this driver ensures that your system can effectively manage power and configure hardware components. Here's a detailed review of the Acpi Msft0101 driver for Windows 7, focusing on its performance, reliability, and overall user experience.
Because Windows 7 lacks the subsystem to communicate with TPM 2.0, it flags the device as an "Unknown Device." Step-by-Step Solutions Acpi Msft0101 Driver Windows 7
Visit the Microsoft Update Catalog and search for KB2920188 .
Open your web browser and navigate to the . Search for KB2920188 in the search bar. Choose the version that matches your system architecture: x64-based systems for 64-bit Windows 7. x86-based systems for 32-bit Windows 7.
If you do not plan to use BitLocker encryption or advanced hardware security features on Windows 7, the easiest way to remove the error is to hide the device from the operating system entirely. This is done via your computer’s firmware settings. Shut down your computer completely. In some OEM hardware configurations, these chipset drivers
: Look for "Intel Platform Trust Technology," "PTT," or "TPM Support." Disable : Set the option to Disabled or Hidden .
Otherwise, disable it, hide it, or move on. Your Windows 7 machine will run just fine without it.
Understanding the ACPI MSFT0101 Error on Windows 7 The ACPI\MSFT0101 hardware ID points directly to the Intel Trusted Platform Module (TPM) 2.0 security chip. When Windows 7 displays a yellow exclamation mark next to an "Unknown Device" with this ID, it indicates a core system mismatch. Windows 7 was released long before TPM 2.0 became an industry standard, meaning the operating system lacks native drivers to recognize or communicate with this newer security hardware. Specifically designed for Windows 7, this driver ensures
Only Windows 7 and Enterprise versions can utilize this device for BitLocker. Resolving the "Unknown Device" Error
When Device Manager displays the hardware ID ACPI\VEN_MSFT&DEV_0101 or simply ACPI\MSFT0101 , it is looking for the driver for a .
Select .