Ok, first of all, hello, and I am having an agitating problem with my mouse.

Ok. I am not sure what Version of inspiron my laptop is. (it was a hand-me-down gift

). Suddenly, my left click on my mouse has stopped working. I have a mouse that comes ON the laptop (and a touchpad)
and I am trying to fix it.the right click and touchpad have nothing wrong with it at all. the left one makes a sound when i click it, but does nothing at all. I really dont wanna buy an attached mouse, is there any way I can fix this? i have searched countlessly, but have gotten nothing. I there is any more info needed, I will try my best to help. If there is anyway to fix it without buying or going to best buy, (etc,) Please tell me!