Fanuc controller "Starting system software, please wait" messages typically indicate an initialization failure stemming from corrupted system files, hardware faults in the SRAM/CPU, or teach pendant communication issues. Troubleshooting involves checking for 7-segment display error codes and performing an "INIT Start" to clear the SRAM, or restoring a previous system image. For further troubleshooting, see the discussion at
Follow these diagnostic steps from simplest to most advanced to resolve the issue. Step 1: Remove External Media and Power Cycle
Is the R30IB controller stuck on "system software starting up"? fanuc starting system software please wait
, motherboard, or CPU daughterboard, can halt the boot process. Peripheral Issues:
If basic troubleshooting fails, you may need to access the menu to restore the system: Step 1: Remove External Media and Power Cycle
A sudden power outage or battery failure (especially the RAM/SRAM battery) can corrupt system files, preventing the software from loading.
Check the internal cooling fans. If a fan fails, the CPU can instantly overheat and freeze during startup. Check the internal cooling fans
Label and disconnect external communication cables (RS-232, Ethernet, PCMCIA, or USB cards).
Select the screen options to check the storage integrity of the FROM/SRAM. The system will scan for data errors.