I got a Raspberry Pi 2 and it did not work with the newest version of NOOBS (flashing LEDs). There is nothing on the TV/monitor. It just says there is no HDMI input. I tried it with an older version and the lights stopped flashing, but still the same problem with the video output. I tried re-installing and re-formatting the OS and SD card multiple times with no luck. I tried multiple different power supplies with sufficient amperage, and multiple TVs. Still dose not work. I ended up returning the Pi and got a new one. I am getting the same problem the the new one.
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Based on the type of flashing of the green (ACT) LED, you can figure out what is wrong (or at least what ballpark it's in) by looking at this page.
Too long didn't read version:
Green LED: ACT LED ------ Red LED: PWR LED
Simple Issues
- No PWR LED - No power.
- PWR LED Blinking - Not enough power.
- PWR LED but no ACT LED (For Pi 1s) - Problem with SD card.
- PWR LED on ACT LED on and STEADY (For Pi 2) - Problem with SD card.
ACT LED Flashing in Specific Pattern
- 1 flash - OS too old. FIX: Use OS written after September 2013
- 2 flashes - SD Card cannot be read.
FOR SOFTWARE (OSs) BEFORE OCTOBER 2012:
- 3 flashes - loader.bin not found
- 4 flashes - loader.bin not launched
- 5 flashes - start.elf not found
- 6 flashes - start.elf not launched
- 7 flashes - kernel.img not found
FOR SOFTWARE (OSs) AFTER OCTOBER 2012:
- 3 flashes - start.elf not found
- 4 flashes - start.elf not launched
- 7 flashes - kernel.img not found
- 8 flashes - SDRAM not recognised. FIX: Newer bootcode.bin/start.elf firmware.
Patrick Cook
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PWR LED on ACT LED on and STEADY (For Pi 2) - Problem with SD card.
– Adam K Dean Jul 16 '18 at 09:42
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Try booting the board with your hdmi plugged in and without a sd card. One should see the test rainbow screen. If not then there is a malfunction either in your display, cable, and/or the raspberry pi.
Dwight Spencer
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