Chosen Solution

What I did & what I know: I disassembled the Gamecube and tested the drive in my other console and it’s working fine. So the problem seems to be with the motherboard(?) Do you have any idea for further troubleshooting? I don’t want to get a new board just now.

Hi! It’s difficult to say what it is, but it could also be the power supply board. Step 11: Nintendo GameCube Teardown Did you tried to swap that out too? I would try that first. Side Note: Could you also post some pictures? Thanks!