The short answer: There is no official, standalone, Microsoft-signed driver for ACPI MSFT0101 for Windows 7. Microsoft intentionally did not backport TPM 2.0 support to Windows 7.
However, here are the three free methods people use to address the issue:
If you cannot find an installer, you can manually force the Windows 7 built-in TPM driver. acpi msft0101 driver windows 7 free
This works because Windows 7 actually includes a generic TPM driver, but it does not automatically bind to the MSFT0101 identifier.
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.). The short answer: There is no official, standalone,
The ACPI MSFT0101 entry stands for Trusted Platform Module (TPM) 2.0. TPM is a security chip on your motherboard that handles encryption, password storage, and Windows features like BitLocker.
Windows 8.1 and Windows 10 have native drivers for TPM 2.0. Windows 7 was designed before TPM 2.0 existed, so it does not include a built-in driver for this hardware. Download and install these
Some users force Windows 7 to use an older TPM 1.2 driver. This does not give full TPM 2.0 functionality but removes the error.
Before we proceed, a critical clarification: Microsoft does not offer a standalone ACPI MSFT0101 driver for Windows 7 directly via Windows Update. Why? Because TPM 2.0 was never officially supported on Windows 7. Microsoft introduced TPM 2.0 support starting with Windows 8 and fully in Windows 10.
So how can you get a free working driver? You have three legitimate methods, all of which use drivers designed for Windows 7 from OEM manufacturers or chipset vendors.
After disabling TPM, the ACPI MSFT0101 device will disappear from Device Manager because Windows will no longer see it. This is not a "driver fix," but it removes the error entirely. Only do this if you do not use BitLocker or other TPM-dependent security features.