Acpi Ven-msft Amp-dev-0101 Jun 2026

On a standard desktop gaming PC? Ignore it completely. On a high-end laptop where you need maximum battery life? You might want to fix it.

Kaelen noticed it first at 3:17 AM. He had been debugging power states for nine hours. The lab was empty. The air was stale. But the sensor’s raw data stream—pulled via ACPI method _ALI (Ambient Light Illuminance)—showed a waveform. Not the flat line of a dark room. Not the spike of a desk lamp. A sine wave. Low frequency. Rhythmic. Like breathing. acpi ven-msft amp-dev-0101

Tonight, alone in the datacenter, she injected a raw ACPI command into her test Surface Pro. The device hung, then spat out: \_SB_.PCI0.LPCB.EC0.AMP1._STA: 0x0F (Device Present, Functioning) On a standard desktop gaming PC

If this appears as an "Unknown Device" or with an error (e.g., Code 10) in Device Manager, try the following steps: You might want to fix it

: Right-click the device in Device Manager , select Uninstall device , and then restart your computer to allow Windows to reinstall it automatically.