Microsoft released a specific hotfix package designed to backport native TPM 2.0 support to Windows 7 Service Pack 1 (SP1) and Windows Server 2008 R2. This is the cleanest and most permanent solution. Step 1: Verify Windows 7 Service Pack 1 The hotfix requires SP1 to install successfully. Press the to open the Run dialog box. Type winver and press Enter .
Method 1: Install the Official Microsoft Hotfix (Recommended) Acpi Msft0101 Driver Windows 7
Microsoft released a specific update to address this exact compatibility issue. This is the cleanest solution as it installs the correct Microsoft-signed driver. Microsoft released a specific hotfix package designed to
For optimal results, here's a comprehensive walkthrough of Option 1: Press the to open the Run dialog box
Save your changes and exit the BIOS. The operating system will no longer see the hardware, which eliminates the unknown device listing entirely. To help pinpoint the best next steps, tell me: Did you to install the KB2920188 update? Is this a clean Windows 7 installation or an older setup?
This is the for Windows 7 users. Enter your BIOS/UEFI setup (press Del, F2, or F10 during boot), find the Security or Advanced tab, locate the TPM setting, and set it to Disabled or Hidden . After rebooting, the ACPI MSFT0101 device will disappear from Device Manager entirely, and the yellow mark will be gone.