Hi, I was hoping I wouldn't have to take the old g4 to the shop, but I guess I will. I'm using a USB mouse, which works, but my trackpad is dead, and the mouse won't work using the trackpad. So sad. :( Anyone know of any possible solutions? Restarts & taking out batter to no avail. Am thinking it's a hardware problem. Someone said these things have internal cables? Hmm. Any help would be greatly appreciated.