He avoided the shady third-party driver-download sites flashing bright green "DOWNLOAD NOW" buttons. They were minefields of malware.
To resolve this, you need the official Lenovo Power Management or ACPI driver. You can find the latest versions on the Lenovo Support site For ThinkPad Laptops: Look for the Lenovo Power Management Driver for Windows 11 For ThinkCentre Desktops: Look for the specific Lenovo ACPI Driver Alternative: If you prefer an automated approach, you can use the Lenovo Vantage app Lenovo Service Bridge acpi ven len&dev 0068 windows 11
If you see this listed as an "Unknown Device" in Windows 11 Device Manager, it means the necessary driver is missing. How to Fix the "Unknown Device" in Windows 11 1. Recommended: Use Lenovo Vantage or System Update acpi ven len&dev 0068 windows 11
