: Returning the BIOS to "Default Settings" (often via the F9 key in the BIOS menu) can force the ACPI table to re-broadcast the correct hardware IDs to the operating system. Driver Re-enumeration
A: Yes. This means your touchpad is running on a fallback driver (e.g., basic PS/2 mouse mode). You lack multi-finger gestures like three-finger swipe. Acpi Msft0001
Hardware Touchpad (I2C device) ↓ I2C Controller (Intel/AMD SoC) ↓ ACPI MSFT0001 (firmware entry) ↓ Windows: i2chid.sys (low-level HID I2C transport) ↓ Windows: mstouchpad.sys (Precision Touchpad core) ↓ User-mode: Touchpad settings (Settings → Bluetooth & devices → Touchpad) : Returning the BIOS to "Default Settings" (often
I2cSerialBus (0x002C, ControllerInitiated, 100000, ...) GpioInt (Edge, ActiveLow, ...) ) Name (_DSM, ...) // Device-specific methods for power, features ...) GpioInt (Edge