The ACPI wake alarm ACPI000E is a firmware-described device that helps Windows work with a computer’s wake-alarm capabilities. Its driver allows the operating system to recognize the device and coordinate supported timed wake events with the system’s power-management features. For Windows 11, 10, 8, or 7, choose a package approved by the manufacturer for your specific computer and operating system.

Key Features

• Device identification: Helps Windows recognize the ACPI000E hardware ID, which may otherwise appear as an unknown device or an entry with a warning in Device Manager.
• Wake-alarm support: Provides the interface Windows needs to use supported firmware wake-timer functions, subject to hardware capabilities and power settings.
• Power-management integration: Works alongside Windows and the system’s ACPI firmware to support scheduled wake behavior from compatible sleep states.
• System-specific compatibility: A correctly matched driver helps avoid recognition problems caused by using a package intended for another model or Windows version.

How to Install

1. Confirm the hardware ID. Open Device Manager and locate the unrecognized device or ACPI wake alarm entry. Right-click it, select Properties, open the Details tab, and choose Hardware Ids. Check for ACPIACPI000E.

1. Check your Windows version. Confirm whether your PC runs Windows 11, 10, 8, or 7, and verify its system architecture. Support can differ by computer model, so do not assume one download works across every listed operating system.

1. Select a compatible package. Use the manufacturer’s driver package for your exact model when available. Windows may also supply the appropriate support through Windows Update or its built-in driver library; a separate download is not always necessary.

1. Install the driver. If the package includes an installer, run it and follow the prompts. For an extracted driver folder, right-click the device in Device Manager, select Update driver, and choose Browse my computer for drivers. Point Windows to the folder containing the compatible driver files.

1. Restart and verify. Restart if prompted, then check Device Manager for remaining warnings. If scheduled waking still does not work, review Windows wake-timer settings and any relevant BIOS or UEFI options. Installing the driver alone does not enable every wake feature or guarantee waking from all power states.

Common Issues and Fixes

• Install fails or shows Code 10/28: ACPI000E is normally handled by the Microsoft ACPI driver. Remove the device in Device Manager with “Show hidden devices,” delete its driver, reboot, then install the latest chipset/ACPI package from the manufacturer and rescan.
• Device not detected or wake alarm does not fire: Enable wake timers in BIOS/UEFI and Windows power settings. Check `powercfg /waketimers` and `powercfg /devicequery wake_armed`; disable Fast Startup if scheduled wake fails after shutdown.
• Version conflicts after an update: Roll back or reinstall the matching OEM ACPI/chipset driver. Avoid mixing generic and vendor packages; if no OEM driver exists, use the Microsoft ACPI driver and retest the wake schedule.