- Make sure you have Fortigate Config ( Forticloud )
- Format Device
- Factory Reset
- Run Hardware Tests https://community.fortinet.com/t5/FortiGate/RMA-Note-Hardware-troubleshooting-with-built-in-FortiOS-hardware/ta-p/192803
- Setup https://mobaxterm.mobatek.net/
- Reload via TFTP