If you have the driver file, you can manually install it via Device Manager. Open , right-click Computer , and select Manage . Select Device Manager from the left pane. Locate the "Unknown Device" with the ACPI\MSFT0101 ID. Right-click it and select Update Driver Software . Choose Browse my computer for driver software .
If you do not utilize BitLocker or specialized cryptographic security tools on Windows 7, you can safely disable the TPM chip at the firmware level. This prevents the hardware from presenting itself to the operating system, eliminating the unknown device error entirely. Shut down your computer completely. Acpi Msft0101 Driver Windows 7
The short answer:
It is critical to understand a limitation: If you have the driver file, you can
If you have downloaded the driver files or extracted the KB2920188 hotfix manually but Windows 7 still refuses to assign it, you can force the installation: Locate the "Unknown Device" with the ACPI\MSFT0101 ID
You just want to get rid of the yellow exclamation mark quickly in the BIOS/UEFI The device disappears from Device Manager entirely Standard hotfix installation throws an error Install Intel Chipset / MEI Drivers from the OEM site Fixes internal ACPI mapping conflicts