Inspiron N5050, touchpad

Inspiron N5050 -my touchpad is not working but in safe mode it functions perfectly? how to fix this oneeeee ..:
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(( i need to resolve this as soon as posible just within this week. help me pleaseee i have many projects to do.... the problem is that when i open my laptop ,the mouse or the touchpad functions but when i put my password to open the window and just waited for about 5 mins ..the touch pad will stop functioning.

but when i used safe mode, it functions perfectly....

suggestions pleasee