I do lots of ways trying to figure it out, but nothing works.
Its my Toshiba laptop, my new one, and I can't use the touch pad.
I don't remember anything I did to make this happen.
Using the FN+F9 won't work, my mum's mouse plugged in will work.
What should I do?

How are you enabling it? By the physical button or through a setting in Control Panel?