Ven-msft Amp-dev-0101: Acpi

If you’ve recently opened the Device Manager on your Windows PC (especially after an update or a new hardware installation) and spotted a yellow exclamation mark next an entry labeled ACPI VEN-MSFT AMP-DEV-0101 , you’re not alone. This cryptic string of text can be intimidating, but it is a specific and usually harmless driver issue that is fixable in just a few minutes.

Remember: A yellow exclamation mark in Device Manager is not an emergency. It is Windows’ way of saying, “I need a little help finding the right instructions for this piece of hardware.” With this guide, you now have all the instructions you need. acpi ven-msft amp-dev-0101

If you are not experiencing any real-world problems (audio crackling, sleep/wake failures, or excessive battery drain), simply disabling the device is a perfectly safe and acceptable solution. However, for a clean Device Manager with full functionality, updating the driver via the Microsoft-supplied .inf file is the gold standard. If you’ve recently opened the Device Manager on

Let us know in the comments which method worked for your specific laptop or desktop model. Last updated: March 2025 – Compatible with Windows 10 22H2, Windows 11 23H2, and Windows 11 24H2. It is Windows’ way of saying, “I need