i am facing a same problem when I updated windows to 8.1 pro ,touchpad is not working and its not showing in mouse and touchpad option same in device management its only HID i tried installing o/S driver its coming error nd there is no driver for touchpad in es1 512 so i tried of es1 511 but its not working ,i also tried f2 bois during startup there is no option for touchpad nothing like basic and advanced wht should i do ?????urgent in trouble tell me if nyone can help
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