---
title: Raspberrypi troubleshooting
tags: raspberrypi
---
#
## Lights status
Blinking Pattern

| Blinking Pattern | Meaning |
| ---------------- | -------------------------------------------------------------------------------------------- |
| 3 flashes | start.elf not found |
| 4 flashes | start.elf not launch-able (corrupt) or card not inserted properly/ slot not working |
| 7 flashes | kernel.img not found |
| 8 flashes | SDRAM not recognized. Here, SDRAM may be damaged or bootcode.bin or start.elf is unreadable. |