Introduction
Raspberry Pi is a small, versatile single-board computer commonly used for DIY projects, IoT, edge computing, and network monitoring. While highly reliable, it can encounter hardware or network connectivity issues. This guide outlines essential troubleshooting steps to help identify and resolve common problems with Raspberry Pi devices.
1. Basic Checks
Check Physical Connections and LED Indicators
Make sure the power cable and Ethernet are properly connected.
Inspect the LED indicators on the Raspberry Pi board.
Verify Raspberry Pi LED Status
LED | State | Description |
PWR (Red) | Solid Red | Power is being supplied correctly. |
| Off / Flickering | Power issue – check power supply and cable. |
ACT (Green) | Blinking | SD card is being read – system is booting. |
| Off | System is idle, or no valid boot detected. |
LNK (if Ethernet) | Blinking Green | Ethernet link is up and there is traffic. |
| Off | No network detected or Ethernet not connected. |
Note: LED behavior may vary slightly depending on the Pi model (e.g., Pi 3, Pi 4, Zero).
2. Reboot the Raspberry Pi and Related Devices
Disconnect the Raspberry Pi from power.
Wait 5–10 seconds, then reconnect the power supply.
If connected to a router, switch, or other network gear, restart those as well.