Chosen Solution
First don’t completely finish screwing it down unless/until its working. You don’t mention why the unit died a few years ago… that problem might be what’s wrong. That the keyboard & trackpad don’t work suggests a liquid spill… that plus time is not a good combination. IF disk utility finds/verifies the drive it’s not part of the problem. Explain that the disk tested with DU but won’t show up on your install, unless you’re trying to install an intel OS on the PPC. It can only run 10.5 (without booting into classic) or earlier. If this Answer is helpful please remember to return and mark it Accepted.
