The hardware ID points directly to the Intel Trusted Platform Module (TPM) 2.0 security device . If you see a yellow exclamation mark next to an "Unknown Device" in your Windows 7 Device Manager with this ID, it means your operating system cannot communicate with your motherboard's hardware security chip.
| Method | Description | Best For | Time Required | | :--- | :--- | :--- | :--- | | | Disable Intel PTT/TPM 2.0 in BIOS | Users who don't need TPM features | ~2 minutes | | Method 2: Install KB2920188 | Install Microsoft update for TPM 2.0 | Windows 7 64-bit users | ~5 minutes | | Method 3: Manual Driver Install | Manually install a generic TPM driver | Advanced users | ~10 minutes | acpi msft0101 driver windows 7 free
Let's explore each of these free solutions in more detail. The hardware ID points directly to the Intel
Windows 7 natively supports TPM 1.2, but lacks the internal architecture to communicate with TPM 2.0 ( MSFT0101 ). Windows 7 natively supports TPM 1
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
Fixing the ACPI\MSFT0101 Driver Error on Windows 7 The ACPI\MSFT0101 hardware ID represents the Intel Trusted Platform Module (TPM) 2.0 device. When this identifier appears in the Windows 7 Device Manager with a yellow exclamation mark, it indicates a missing or incompatible driver.