The ACPI\FNBT0000 or ACPI\VEN_FNBT&DEV_0000 error is a common Windows Device Manager issue. It usually displays as an with a yellow exclamation mark under the "Other devices" category.
Right-click (or the device showing ACPI\FNBT0000 in its details) and select Update driver . Click Browse my computer for drivers . acpi fnbt0000 driver fix
Ensure is checked, then click Next to let Windows locate and match the driver. Method 4: Install General Hotkey Features Integration acpi fnbt0000 driver fix