Stuck on "system is initializing" SX1410

First symptom: all port lights extinguished, all connections lost. Restarted switch and logged in, and now I’m stuck on a “system is initializing” blue screen.

All LED lights appear to be operating normal.

W​e’ve tried restarting and using initial configuration, nothings changed so far.

Any ideas?

Holding reset button for 30 seconds appears to have resolved issue. ​