1
Look at the function keys on your keyboard, if one of those keys has a touchpad symbol with a line through it, try pressing that key or Fn + that key to test if that enables the touchpad.
2
If the touchpad is not listed in the HID section, is it listed in the 'Mice and other pointing devices' section in Device Manager?
3
If not:
Please provide a screenshot of your Device Manager window.
Click your Start Button, then just type msinfo and press Enter, please provide a screenshot of the resulting System Information window.