my mouse pointer is destorted on my old hp dv4000 laptop

edit

Its all about acceleration-speed go to settings,select options.

You should check the acceleration settings and the pointer speed of your mouse in the appropriate System-settings. You did not tell us which desktop you are using. The next thing you can do is to turn off the touch-pad when a mouse is connected. I own for myself a HP notebook, I have no issues with mouse or touch-pad. I hope it will help you.