No one has been able to help me yet, so I'm throwing down the gauntlet to all the techies out in space to help me with a critical problem. My touchpad on my Acer Aspire 5517 suddenly stopped working. I have checked to make sure the light is lit on the button that shows the touchpad and it is on. I have done the Fn-F7 function and again nothing. I would love to use a mouse except I can't because someone got angry with me and destroyed my USB ports. I'am desperate for this to be fixed so that I can work. I hope someone has an answer for me. Thank you so much.