Troubleshooting • Re: My Raspberry Pi 4 won't read the SD card, and the green LEDs are blinking 7 to 8 times (I'm not sure if it's 8).

I had a fan connected to the board, maybe that was the cause.

A fan connected directly to a GPIO pin may work. Once. But maybe never again. (When the fan stops it can destroy the connected GPIO and subsequently the whole SoC.)

Statistics: Posted by B.Goode — Wed Nov 26, 2025 8:15 am

---