Download ACPI Drivers for Windows 11, 10, 8.1, 8, or 7 - 64-bit and 32-bit
Troubleshooting Unknown Devices in Device Manager for Windows 7
When you encounter "Unknown Devices" in Device Manager on Windows 7, it's usually a sign of missing or outdated drivers. In particular, the ACPIMSFT0101 device, representing Intel Platform Trust Technology, is not supported under Windows 7 x86.
Hotfix for Trusted Platform Module (TPM) 2.0 Support in Windows 7
To resolve this issue, Microsoft has released a hotfix that adds support for Trusted Platform Module (TPM) 2.0 in Windows 7. This hotfix updates the ACPI driver to correctly identify and support the ACPIMSFT0101 device.
Download ACPI Drivers for All Windows Versions
If you're experiencing similar issues with ACPI drivers on other Windows versions, you can download the latest drivers from the following links:
- ACPIMSFT0101 Driver for Windows 11, 10, 8.1, 8, or 7 (64-bit)
- ACPIMSFT0101 Driver for Windows 11, 10, 8.1, 8, or 7 (32-bit)
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