If the keyboard freezes during boot and a factory reset doesn’t work, the internal battery may be dead (requires service) or the OS corruption is severe (may need a “restore from emergency disk” using the original DVD).
Turn off the instrument and unplug any external USB drives. korg pa2x pro factory reset
Performing a factory reset on your Korg Pa2X Pro is the definitive way to resolve persistent system glitches, clear corrupted data, or return the workstation to its original out-of-the-box state. Unlike a simple power cycle, a full system reset reformats internal memory and reloads the Operating System (OS) and Musical Resources. If the keyboard freezes during boot and a