<p>I just can not turn on the EV3 with the SD card. I only turned on it twice.
The EV3 stops at [-leJOS EV3] UI and does not go to the next step.</p>

<p>I charged the battery, reinstalled the software inside of the SD card, changed the EV3 for one time, reset the EV3, but I still cannot turn it on.</p>

<p>I can only turn it on without the SD card.</p>

<p>How can I fix the problem?</p>

CC BY-SA 3.0
2015-09-26T13:57:37.913Z
Have you tried reformatting the SD? It should only contain a single FAT32 partition. Also check it's not a SDXC card, as they are not supported
shea
CC BY-SA 3.0
2015-09-26T14:14:19.100Z
Have you looked at the [leJOS EV3 forum](http://www.lejos.org/forum/)? This question gets asked (and answered) there on an almost daily basis.
Phil B.
CC BY-SA 4.0
2020-04-20T00:51:58.853Z
This is most likely because of a bad flashing software or  or a bad SD card. But I'm not really certain, as I don't know much about this sort of thing.
mindstormsboi
<ev3>
Unable to turn on the EV3
ryu
# Unable to turn on the EV3

(Asked by: username_0 on 2015-09-26)

I just can not turn on the EV3 with the SD card. I only turned on it twice.
The EV3 stops at [-leJOS EV3] UI and does not go to the next step.

I charged the battery, reinstalled the software inside of the SD card, changed the EV3 for one time, reset the EV3, but I still cannot turn it on.

I can only turn it on without the SD card.

How can I fix the problem?

**Tags:** ev3

> **Comments:**
> **username_1**: Have you tried reformatting the SD? It should only contain a single FAT32 partition. Also check it's not a SDXC card, as they are not supported  
> **username_2**: Have you looked at the [leJOS EV3 forum](http://www.lejos.org/forum/)? This question gets asked (and answered) there on an almost daily basis.  
> **username_3**: This is most likely because of a bad flashing software or  or a bad SD card. But I'm not really certain, as I don't know much about this sort of thing.  

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## 0 answers

