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Advisory: HP EliteBook Folio G1 Notebook PC - Yellow Exclamation Mark On Unknown Device (ACPI\MSFT0101) After Reinstalling Windows 7

SUPPORT COMMUNICATION - CUSTOMER ADVISORY

Document ID: c05083992

Version: 1

Advisory: HP EliteBook Folio G1 Notebook PC - Yellow Exclamation Mark On Unknown Device (ACPI\MSFT0101) After Reinstalling Windows 7
NOTICE: The information in this document, including products and software versions, is current as of the Release Date. This document is subject to change without notice.

Release Date: 2016-04-14

Last Updated: 2016-04-14


DESCRIPTION

After reinstalling the Windows 7 64-bit operating system, there is Unknown device listed in the Device Manager. Details for the device show value ACPI\MSFT0101.

Figure 1: Unknown device in Device Manager

Unknown device in Device Manager

Unknown device in Device Manager

This occurs because Windows 7 Service Pack 1 (SP1) does not have support for Trusted Platform Module (TPM) 2.0.

SCOPE

Information in this document applies to the following:

Computer:

HP EliteBook Folio G1 Notebook PC

Operating Systems:

Microsoft Windows 7 (64-bit) - all editions

RESOLUTION

Resolve the issue by installing the Hotfix from Microsoft KB2920188:


Hardware Platforms Affected: HP EliteBook Folio G1 Notebook PC
Operating Systems Affected: Not Applicable
Software Affected: Not Applicable
Support Communication Cross Reference ID: IA05083992
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