i bought a mouse and external keyboard and everything is working , so i am positve that the 580 dollar fixup cost is bogus that they told me it would cost, this happened the very first time i went int o the mac store in kona hawaii , amd the counter guy that no longer works there only 3 weeks later, fixed it immediately, went in 4 days ago and something in that store set it off again and now they are tellling me i have to replace the trackpad and keyboard , they are bogus because i am usb connected to a mouse and keyboard i just bought has everything working , so commonsense tells me it is something else that is blocking a 2 year old laptop