I need the drivers for ACPI\MSFT0101

Question

I need the drivers for ACPI\MSFT0101

ZhongChi Liao 0

In the Windows 7 system, I found that in the Device Manager, the "Unknown Device" labeled as "Microsoft ACPI-Compliant System" was displayed. Therefore, in the Device Manager, I right-clicked on the unknown device and selected "Properties". On the "Details" tab, I chose "Hardware Ids" and copied the value displayed there. This value is ACPI\MSFT0101. I visited the Microsoft Update Catalog website and used the copied hardware ID：ACPI\MSFT0101 to search for the corresponding driver, but couldn't find any results for ACPI\MSFT0101. I need to help. Thank you.

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Answer 1

Hendrix-V 19,035 Microsoft External Staff Moderator

Hi ZhongChi Liao,

Please note that Windows 7 reached End of Support on January 14, 2020. Systems running Windows 7 no longer receive security updates, bug fixes, or technical support from Microsoft. While troubleshooting information may still be available, some newer hardware and drivers may have limited or no support on Windows 7.

The hardware ID ACPI\MSFT0101 is commonly associated with the system's Trusted Platform Module (TPM). In many cases, this is not a standalone Microsoft driver that can be downloaded directly from the Microsoft Update Catalog, which is why searching for the hardware ID may not return any results.

You can try the following:

Identify your PC or motherboard manufacturer and model.
Visit the manufacturer's support website.
Download and install the latest chipset, TPM, and BIOS/UEFI updates available for your device.
Restart the computer and check Device Manager again.

If you are using Windows 7, please note that TPM support depends heavily on the hardware vendor's drivers and firmware, so the correct package is usually provided by the device manufacturer rather than through a generic Microsoft driver.

If the device remains unrecognized after installing the available OEM drivers, please share your computer or motherboard model. That information can help determine whether a compatible TPM driver is available for your specific hardware.

I hope this points you in the right direction. Let me know if you need further assistance, feel free to ask me by clicking "Add Comment" or "Add Answer" if you cannot add comment so your response will be visible. Thanks for your effort.

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ZhongChi Liao 0 Reputation points

2026-09-12T08:01:41.78+00:00

Hi Hendrix-V,

Thank you for your answer. My computer is Dell precision 5820 Tower. I have tried the corresponding drivers on the official Dell website, but it didn't work either. If that doesn't work, I'll try to disable TPM. Thank you.
ZhongChi Liao 0 Reputation points

2026-09-12T08:11:16.0533333+00:00

Thank you for your answer. My computer is Dell precision 5820 Tower. I have tried the corresponding drivers on the official Dell website, but it didn't work either. If that doesn't work, I'll try to disable TPM. Thank you.
Hendrix-V 19,035 Reputation points Microsoft External Staff Moderator

2026-09-13T06:05:56.87+00:00

Hi ZhongChi Liao,

Thank you for following up.

If disabling TPM removes the unknown device and the system operates normally afterward, that would further indicate the issue is related to Windows 7 compatibility with the TPM hardware rather than a missing standalone driver.