I picked up a February 2000 Powerbook G3 500 because I've wanted to get a classic Mac for a while and this one was going for cheap. They said it booted to a question mark and when it arrived it was easy to see why, someone had pinched the hard drive. I dropped in a 30GB IBM drive I had (which incidentally was an Apple drive I picked up for an old Wintel machine a couple of years ago). Holding down C or Option with a retail 9.2.1 disk in the original DVD-ROM drive yielded nothing, and the same thing happens with the drop-in replacement Teac CD-224E drives I grabbed on ebay thinking the DVD drive was cooked. I've tried resetting the PMU and booting with the PRAM battery disconnected. Holding option shows the boot menu with nothing there (pressing the retry button brings the disk drive to life, but nothing ever shows up), and of course nothing is on the blank hard drive (formatted in HFS+). I checked both memory DIMMs by inserting one at a time, the original 128MB one and an added Hyundai 256MB card. Basically I've tried all the techniques I've accrued from working on computers for a few years, as well as some of the Mac-specific ones and now I've run out of ideas.