I just transferred my server to a new tower (new mobo, processor, etc.) and now my Array will not start, and "Warning: API is offline!" has appeared. This will be the second time I've moved 'towers' - my work keeps tossing out newer and newer Dell micro PC's so I keep upgrading. The previous change went without issue. The array reports "Stopped. Configuration valid." but when I click on Start, the button goes gray but the array doesn't... start. No dancing unraid logo, etc. For context it appears like this, but the array doesn't start. I have tried to create a new config, but that also does not seem to work - I click "Apply" and nothing happens. There is a chance that the Pool device might have a bad PCIe controller, but everything tests ok in the BIOS and the SSD is recognized everywhere. I'm at a loss. I have attached the diagnostics, but I need to emphasize that operating Unraid, outside the GUI is at the very upper limits of my technical ability, so please ELI5 any advice you might have.
tyrellcorpdata-diagnostics-20260402-2230.zip