I followed the directions on iFixit to replace the original 10GB hard drive with a 60GB. The directions were pretty clear, but when I put it back together and turned it on, it makes some wierd noises and has strange blips across the screen. The unit worked perfectly (albeit slowly) before I loosened any screws, so I doubt a part is bad. I recorded what it does; you can view it here (turn your volume up, the video is a bit quiet). The question marked folder is expected, as I haven't done anything with it since I put the hard drive in this afternoon. Any ideas as to what's going on?