I bought the laptop on ebay it came with the OS installed ect and the touchpad was working fine.. but i reset laptop to make it fresh for my self to use, Its working fine but the laptop touchpad not working at all, i tried installing drivers, i downloaded Driver booster and Driver easy and no hope, I manually got them off HP driver site and no hope still, I tried all F keys and The is no double tap button on touchpad, I can not find nothing to fix it. Please help