Trackpad issue !!

Hello,

As I used to do , I put my macbook PRO ( Late 2011 ) to sleep then I went to work. When I came back just opened it and can't use the trackpad. When I try to move the pointer it moves for 3 cm for example then freeze , two or three or four fingers not working any more !!! I restared the mac twice and same problem.

Any ideas ?

Regards