![RPi 3b doesn't boot from sd card. Without sd card, both ethernet light up, even with sd card inserted too. ACT led wont light up. 3.3v rail works. : r/RASPBERRY_PI_PROJECTS RPi 3b doesn't boot from sd card. Without sd card, both ethernet light up, even with sd card inserted too. ACT led wont light up. 3.3v rail works. : r/RASPBERRY_PI_PROJECTS](https://preview.redd.it/fvgosflk52f81.jpg?auto=webp&s=6c8a81f4cfe2e3d54e92bfed596e8a4d34b705c9)
RPi 3b doesn't boot from sd card. Without sd card, both ethernet light up, even with sd card inserted too. ACT led wont light up. 3.3v rail works. : r/RASPBERRY_PI_PROJECTS
![Custom laptop power management: external activity, power on button, graceful power off, hard power switch | blog Custom laptop power management: external activity, power on button, graceful power off, hard power switch | blog](https://user-images.githubusercontent.com/26856618/33644021-4bbc27a2-d9f7-11e7-9b63-1e15b80b4280.png)
Custom laptop power management: external activity, power on button, graceful power off, hard power switch | blog
![Using A Console Cable to Troubleshoot | Raspberry Pi Zero Headless Quick Start | Adafruit Learning System Using A Console Cable to Troubleshoot | Raspberry Pi Zero Headless Quick Start | Adafruit Learning System](https://cdn-learn.adafruit.com/assets/assets/000/041/029/medium800/raspberry_pi_act_led.jpg?1492915415)
Using A Console Cable to Troubleshoot | Raspberry Pi Zero Headless Quick Start | Adafruit Learning System
![Amazon.com: GeeekPi Raspberry Pi 4 Model B 4GB RAM Board and DeskPi Lite Raspberry Pi 4 Case with Power Button/ Heatsink with PWM Fan,32GB Card,QC3.0 Power Supply for Raspberry Pi 4B : Amazon.com: GeeekPi Raspberry Pi 4 Model B 4GB RAM Board and DeskPi Lite Raspberry Pi 4 Case with Power Button/ Heatsink with PWM Fan,32GB Card,QC3.0 Power Supply for Raspberry Pi 4B :](https://m.media-amazon.com/images/I/71lGU0T0ELL.jpg)
Amazon.com: GeeekPi Raspberry Pi 4 Model B 4GB RAM Board and DeskPi Lite Raspberry Pi 4 Case with Power Button/ Heatsink with PWM Fan,32GB Card,QC3.0 Power Supply for Raspberry Pi 4B :
![Help, does anyone know what's the problem here? Green light blinks four times at start then only get a solid red after, preloaded with noobs in sd card : r/RASPBERRY_PI_PROJECTS Help, does anyone know what's the problem here? Green light blinks four times at start then only get a solid red after, preloaded with noobs in sd card : r/RASPBERRY_PI_PROJECTS](https://external-preview.redd.it/2XHsKRp6Er-ObDxbYCAy4QsgffNrUyEcjGZilZOQo74.png?width=640&crop=smart&format=pjpg&auto=webp&s=a4b1cd14eab3775d0ec32bdc0b5a21660d84f328)