When Windows 10 cannot identify a piece of hardware, it labels it as an "Unknown Device." To find out exactly what the hardware is, you have to look at the Hardware IDs.
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Confirm the value displays ACPI\VEN_LEN&DEV_0078 or LEN0078 . Step 2: Download the Official Driver When Windows 10 cannot identify a piece of
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Windows Device Manager flags missing system components with a yellow exclamation mark. Right-click the and select Device Manager . Expand the System devices or Other devices section. Look for Unknown device or Lenovo Virtual Hardware Button . Right-click the item and select Properties . Navigate to the Details tab. Click the property dropdown and select Hardware Ids .
Missing or outdated drivers lead to unresponsive buttons or system errors. This guide provides the exact steps to locate, download, and install the correct driver for Windows 10. Step 1: Identify the Missing Driver
Always source system drivers directly from the manufacturer to avoid malware. Method A: Lenovo Support Portal Navigate to the official Lenovo Support Website. Enter your laptop serial number in the search bar. Click on from the left menu. Select the Manual Update tab.