Toshiba touch pad mouse works wrong

HI. I have recently purchased Toshiba laptop. Mouse was working on and off. Kind of found solution with F5 and it worked for a while.

Now it has gone all funny. It either would not work or if it does, it only lets scroll up and down or would work all directions if either of buttons pressed and hold when trying to move from place to place.

Please Help

External mouse works fine

Thanks

Liene