ESP8266 Community Forum

I have a nodemcu esp8266 e12. The board was working fine and suddenly it stopped working. It has a solid blue led now and the Wifi module led does not light up anymore. My computer detects the board when connected, but I can't upload or flash it. I get this error when I upload the blink led code:warning:
espcomm_sync failed
error: espcomm_open failed
error: espcomm_upload_mem failed
error: espcomm_upload_mem failed
Someone pls Help

After power on or at manual reset (with the RST-button on the board), the blue LED on the ESP itself should at least blink a few times.
Does yours?
You'd better temporary remove the NodeMCU from the breadboard, to rule that out.

I don't know where the blue LED on your board is for (I don't have one).

QuickFix wrote:After power on or at manual reset (with the RST-button on the board), the blue LED on the ESP itself should at least blink a few times.
Does yours?
You'd better temporary remove the NodeMCU from the breadboard, to rule that out.

I don't know where the blue LED on your board is for (I don't have one).

the led turns off when i press the onboard reset button,but it comes back on as soon as I let go of the button

Please tell me what happens with the blue LED on the ESP (the one encircled in red, near the antenna), not the blue LED on the NodeMCU-board.