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raspberry pi 3b+ wont boot

Hi there! I have 2 raspberry`s. One is working fine and well and if i want to turn on my other raspberry (with the same SD card what i used for the other) the ACT led is just blinking 4 times and wont boot the raspberry. I checked and 3v3 and 5v is there. I tried 2 types of Adapters 5v 1A and other other is 5v 2A and with both Adapter was working fine (just 1 raspberry) and the other raspberry was still not working :( My question is what could be the problem that it wont boot?

3rd Feb 2022, 12:54 PM
Milan Csúri
Milan Csúri - avatar
2 ответов
+ 1
This site has a list with errors: https://elinux.org/R-Pi_Troubleshooting
3rd Feb 2022, 7:50 PM
Paul
Paul - avatar
0
Defect.
3rd Feb 2022, 3:58 PM
JaScript
JaScript - avatar