Hello. I apologize for the late response, i still haven't a solution for the issue, i have tried updating and downgrading the driver but it not work.
I have also tried inserting a windows installation CD and reboot into installation mode but the touchpad still did not work there. I cannot think it could be hardware because i haven't done anything that could harm the laptop like dropping it or spilling water etc..
Even if it's a hardware problem, it wouldn't be listed in the device manager am i correct? Even as an error