1. Download the hotfix provided by Microsoft:
Update to add support for TPM 2.0 in Windows 7 and Windows Server 2008 R2
Download Link : https://support.microsoft.com/en-us/kb/2920188
2. Disable TPP on BIOS.
Open BIOS, normally by pressing F2 (the key might differ from one model to another), go to security - advance and disable the Intel Trusted Platform.
Here is a usefull information from Microsoft support forum: Source
" Intel Platform Trust Technology (Intel PTT) is a type of virtual TPM. It resides in the FW of your NUC and is controlled by the system BIOS. The version of TPM it emulates is TPM v2.0, which is not recognized by Windows 7.
The hotfix from Microsoft will resolve the unknown device/yellow bang in Device Manager but will not make it usable. This is true for PCs that have a HW TPM v2.0 as well. There is no support for them under Windows 7 and no way to get them to work. TPM v1.2 and earlier are the ones supported by Windows 7.
For the ACPI\MSFT0101 unknown device you can also simply disable Intel PTT. On Intel NUCs Visual BIOS: BIOS Setup
Advanced - Security - Security Features pane - uncheck Intel Platform Trust Technology. Intel PTT was created as a way of satisfying Microsoft's requirement that Client PCs have a TPM for newer Windows products (8.1 and later).