and observe if it progresses past the "Please Wait" screen. 2. Check for Hardware Communication Issues

: Unplug any USB drives, memory cards, or Ethernet cables, as these can sometimes cause the bootloader to hang.

If the hardware is healthy, the system software or SRAM data may be corrupted, often due to a dead backup battery or an improper shutdown during a write cycle. Facebook·FANUC Robot Programmers

: If you are using a robotic controller (R-30iA/B), a faulty teach pendant or a frayed cable can prevent the system from completing its boot sequence. Try swapping with a known working pendant if available.

: On many Fanuc CNC controls (like the 16i/18i), daughter boards for graphics or motion control can vibrate loose over time. Open the yellow case behind the screen and carefully reseat these boards.

to allow the capacitors to drain completely.