It's bizarre that the Kickstart disk loads but Workbench doesn't... At least your floppy drive and the basic hardware would appear to be OK...
Unless there are a couple of subtle read errors on the Kickstart disk that are preventing the machine from going further? Presumably, this disk would have some sort of checksums on it to prevent the Amiga from loading a bad image?
What happens when you boot the Amiga? Presumably, you're seeing the "Kickstart hand", waiting for the KS disk to load, and then seeing the "Workbench hand"?
Once you're at the "Workbench hand" and insert the Workbench disk, is there any activity? Does the A1000 even attempt to load anything?
- Ali