: This older OS does not natively support TPM 2.0. Users often see this entry after installing Windows 7 on newer hardware (like Intel Skylake or later). Without a specific Microsoft hotfix, Windows 7 cannot identify the device. How to Fix the ACPI\MSFT0101 Driver Issue 1. Enable TPM/PTT in the BIOS
Look for settings labeled , TPM , Intel Platform Trust Technology (PTT) , or fTPM (for AMD). Ensure the setting is Enabled .
For modern systems, the driver is part of the "inbox" set and doesn't require a separate download. Right-click the in Device Manager.
Restart your computer and enter the (usually by pressing F2, F10, or Del during boot).
Restart your computer after installation. This update allows Windows 7 to recognize the ACPI\MSFT0101 hardware ID as a security device. 3. Refresh Drivers in Windows 10/11
: If you are using Windows 7 and do not need BitLocker, you can simply Disable this in the BIOS to remove the "Unknown Device" warning from Device Manager. 2. Install the Windows 7 Hotfix (KB2920188)
The hardware ID (often simplified as ACPI\MSFT0101 ) typically refers to the Trusted Platform Module (TPM) 2.0 or Intel Platform Trust Technology (PTT) . This device is a critical security component that manages encryption keys for features like Windows BitLocker and helps verify the integrity of your system during startup.
The device cannot function if it is partially disabled at the hardware level.
: This older OS does not natively support TPM 2.0. Users often see this entry after installing Windows 7 on newer hardware (like Intel Skylake or later). Without a specific Microsoft hotfix, Windows 7 cannot identify the device. How to Fix the ACPI\MSFT0101 Driver Issue 1. Enable TPM/PTT in the BIOS
Look for settings labeled , TPM , Intel Platform Trust Technology (PTT) , or fTPM (for AMD). Ensure the setting is Enabled .
For modern systems, the driver is part of the "inbox" set and doesn't require a separate download. Right-click the in Device Manager. acpi ven-msft amp-dev-0101
Restart your computer and enter the (usually by pressing F2, F10, or Del during boot).
Restart your computer after installation. This update allows Windows 7 to recognize the ACPI\MSFT0101 hardware ID as a security device. 3. Refresh Drivers in Windows 10/11 : This older OS does not natively support TPM 2
: If you are using Windows 7 and do not need BitLocker, you can simply Disable this in the BIOS to remove the "Unknown Device" warning from Device Manager. 2. Install the Windows 7 Hotfix (KB2920188)
The hardware ID (often simplified as ACPI\MSFT0101 ) typically refers to the Trusted Platform Module (TPM) 2.0 or Intel Platform Trust Technology (PTT) . This device is a critical security component that manages encryption keys for features like Windows BitLocker and helps verify the integrity of your system during startup. How to Fix the ACPI\MSFT0101 Driver Issue 1
The device cannot function if it is partially disabled at the hardware level.