ACPI\MSFT0101

The device ID refers to the Intel Trusted Platform Module (TPM) 2.0 or Intel Platform Trust Technology (PTT) . On Windows 7, this device often appears as an "Unknown Device" because native support for TPM 2.0 was only introduced in Windows 8. Driver Solution for Windows 7

Important warning:

Avoid any website that asks for payment or credit card information for this driver. Many scam sites claim to offer “ACPI MSFT0101 driver download for Windows 7” for $19.99 or $29.99. These are fraudulent. The driver is available for free from legitimate sources.