Acpi Msft0101 Driver Windows 7 Free May 2026
If you don’t use TPM-dependent software (most home users don’t), you can safely ignore the yellow mark. It does not affect gaming, office work, or internet browsing. But the free driver above will clean up Device Manager completely.
Since MSFT0101 often relates to the TPM or Intel Management Engine, you need to go to your laptop manufacturer's support page (HP, Dell, Lenovo, etc.).
ACPI\MSFT0101 is a hardware ID used by Microsoft Surface devices (and some Microsoft-branded tablet/hybrid components) to identify a HID-compliant device, commonly a sensor or touch/pen-related controller. On Windows 7, the OS does not include a built-in driver that fully supports this device ID for these newer Surface-specific components, so devices show as unknown or as "ACPI\MSFT0101" in Device Manager until an appropriate driver is installed.
No. That error is separate. You need to slipstream USB 3.0 and NVMe drivers into your Windows 7 installation ISO. The ACPI MSFT0101 driver is post-installation.
While Windows 7 will run fine with this driver missing, you may experience:
Search for Drivers on the Manufacturer’s Website:
Use a Driver Update Tool (with caution):
This information should help guide you through finding and installing the necessary driver. If you're still having trouble, providing more specific details about your system and the device in question might help narrow down solutions.
The hardware ID ACPI\MSFT0101 refers to the Intel Platform Trust Technology (PTT)
, which is an integrated firmware-based Trusted Platform Module (
) found on Intel Skylake and newer motherboards. In Windows 7, this often appears as an "Unknown Device" in the Device Manager because the OS does not natively support TPM 2.0. kb.stonegroup.co.uk Function and Necessity acpi msft0101 driver windows 7 free
: It provides secure credential storage and key management, primarily used for drive encryption. : Unless you are using Windows 7 Ultimate or Enterprise
editions, this device has no functional value, as other versions do not support BitLocker. Windows 7 Support only supported on 64-bit versions
of Windows 7; there is no official driver for 32-bit (x86) systems. HP Support Community How to Install the Driver (Windows 7 64-bit Only)
To resolve the "Unknown Device" error, you typically need a specific Microsoft Hotfix rather than a standard driver installer. Download the Hotfix : Use the official Microsoft Update Catalog , which adds support for TPM 2.0 in Windows 7. UEFI Mode Requirement : Your system must be running in for the hotfix to recognize the device. Manual Installation
: If the hotfix doesn't auto-install, you may need to unzip the files and use Device Manager
to "Update Driver" by browsing to the folder containing the extracted hotfix files. HP Support Community Alternative Solution: BIOS Disabling
If you are not using BitLocker or are on a 32-bit version of Windows 7, the most effective way to remove the error is to disable the feature in your BIOS/UEFI settings: Look for settings labeled Intel Platform Trust Technology (PTT) Security Device Support and set them to
This will remove the "Unknown Device" from your Device Manager and can save a small amount of system resources. HP Support Community Safety Warning Avoid "free driver" websites that offer
installers for ACPI MSFT0101. These are often bundled with adware or malware. Stick to official sources like Microsoft Support or your hardware manufacturer's (e.g., ) support pages. HP Support Community Windows 7 edition to confirm which hotfix version you need? ACPI\MSFT0101 there is any driver that can install this? Oct 6, 2559 BE —
The hardware ID ACPI\MSFT0101 refers to the Intel Platform Trust Technology (PTT) , which provides Trusted Platform Module (TPM) 2.0 If you don’t use TPM-dependent software (most home
functionality. This device is natively supported in Windows 8 and 10, but often appears as an "Unknown Device" in Windows 7 because that OS was designed for the older TPM 1.2 standard. How to Resolve the ACPI\MSFT0101 Error in Windows 7
There are two primary ways to handle this missing driver depending on whether you actually need TPM security features. Option 1: Install the Microsoft Hotfix (For 64-bit Systems) If you are using Windows 7 64-bit
in UEFI mode, Microsoft released a specific hotfix to add native support for TPM 2.0. Download the Hotfix : Locate and download Microsoft Update KB2920188 Verify UEFI Mode : This hotfix only works if your system is running in , not Legacy BIOS.
: Run the executable and restart your computer. The "Unknown Device" should now be identified as a "Trusted Platform Module 2.0" in Device Manager.
Note: This driver is not supported on Windows 7 32-bit (x86) versions
Option 2: Disable the Device in BIOS (Recommended for Most Users)
For the majority of Windows 7 users, TPM 2.0 provides no benefit. It is primarily used for encryption, which is only available in the Enterprise
editions of Windows 7. If you have Home or Professional versions, you can safely hide the error. Enter BIOS : Restart your PC and press the BIOS key (usually Locate Security Settings : Look for options labeled Intel Platform Trust Technology Security Chip Set to Disabled : Change the status to Save and Exit
to save changes. The "Unknown Device" will no longer appear in Windows. Summary Table: Should You Install It? OS Version Need the Driver? Recommended Action Windows 7 64-bit (Ultimate/Enterprise) Yes (for BitLocker) Windows 7 64-bit (Home/Pro) Disable in BIOS or ignore Windows 7 32-bit (All versions) No (Not supported) Disable in BIOS to clear error
: Avoid "free driver updater" websites that claim to have a custom ACPI\MSFT0101 Since MSFT0101 often relates to the TPM or
driver. These are often bundled with adware; the only legitimate way to "fix" this is through the official Microsoft update or BIOS settings. your system is currently using?
The hardware ID ACPI\MSFT0101 typically represents the Trusted Platform Module (TPM) 2.0 device, a security chip commonly found on modern Intel and AMD systems. While Windows 8 and 10 support this device natively, Windows 7 often flags it as an "Unknown Device" because it lacks the built-in drivers for TPM 2.0. 1. Identify the Device
This device is often part of Intel Platform Trust Technology (PTT) or a standalone TPM chip. It is responsible for security features like BitLocker encryption and key management. 2. How to Get the Driver (Windows 7 64-bit)
Microsoft released a specific hotfix (KB2920188) to add support for TPM 2.0 to Windows 7 x64.
Recommended Fix: Download and install the KB2920188 update directly from Microsoft (if available) or through manufacturer support pages like HP Community or Lenovo Support.
System Requirement: For this driver to work, your system's BIOS must be running in UEFI mode. 3. Limitations for 32-bit (x86) Systems
The ACPI\MSFT0101 device is not supported on Windows 7 32-bit. If you are using a 32-bit OS, the "Unknown Device" error will persist because no compatible driver exists for that architecture. 4. Alternative: Disabling the Device
If you do not plan to use BitLocker or other hardware security features, you can safely remove the error from Device Manager by disabling the chip: Enter your computer's BIOS/UEFI settings during startup. Look for settings labeled Security, TCG, or Intel PTT. Set the device to Disabled. Summary Table Windows 7 x64 (64-bit) Windows 7 x86 (32-bit) Driver Status Supported via Hotfix (KB2920188) Not Supported BIOS Mode Must be UEFI Function Enables TPM 2.0/BitLocker Compatible driver Windows 7 - 64 bit drivers - HP Community
To resolve the "Unknown Device" error for ACPI\MSFT0101 on Windows 7, you are likely looking for the Trusted Platform Module (TPM) 2.0 driver or hotfix. This device is part of the Intel Platform Trust Technology (PTT) found on newer motherboards (like Intel Skylake) and is used for security features like BitLocker. How to Fix the ACPI\MSFT0101 Error Compatible driver Windows 7 - 64 bit drivers - HP Community