# PYNQ Z1; Done and LD13 are on but it seems like both is stuck **URL:** \ **Category:** Support\ **Created:** [June 17, 2020, 3:06pm UTC](https://discuss.pynq.io/t/pynq-z1-done-and-ld13-are-on-but-it-seems-like-both-is-stuck/1383 "2020-06-17T15:06:46Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![hazelmh](https://avatars.discourse-cdn.com/v4/letter/h/c5a1d2/32.png) [@hazelmh](https://discuss.pynq.io/u/hazelmh)\ **Post date:** [June 17, 2020, 3:06pm UTC](https://discuss.pynq.io/t/pynq-z1-done-and-ld13-are-on-but-it-seems-like-both-is-stuck/1383/1 "2020-06-17T15:06:46Z")
PYNQ Z1 doesn’t boot successfully anymore. It was doing fine the last time I used it. **Blue LD4 & LD5** LEDs and four **Yellow/Green LD0-LD3** LEDs do not flash simultaneously. The **Blue LD4-LD5** LEDs **Yellow/Green LD0-LD3** LEDs are not turning on. What is the problem here and how to fix it ? microSD card is from Toshiba. The board and my MacBook are connected directly. ---
**Author:** ![marioruiz](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/marioruiz/32/2177_2.png) [@marioruiz](https://discuss.pynq.io/u/marioruiz)\ **Post date:** [June 17, 2020, 9:50pm UTC](https://discuss.pynq.io/t/pynq-z1-done-and-ld13-are-on-but-it-seems-like-both-is-stuck/1383/2 "2020-06-17T21:50:53Z")
Have you tried reflashing the micro SD card with the latest PYNQ version? or using a different micro SD? [PYNQ - Python productivity for Zynq - Board](http://www.pynq.io/board.html) Can you capture the output of the serial terminal? [PYNQ-Z1 Setup Guide — Python productivity for Zynq (Pynq)](https://pynq.readthedocs.io/en/v2.5.1/getting_started/pynq_z1_setup.html#opening-a-usb-serial-terminal) ---
**Author:** ![hazelmh](https://avatars.discourse-cdn.com/v4/letter/h/c5a1d2/32.png) [@hazelmh](https://discuss.pynq.io/u/hazelmh)\ **Post date:** [June 18, 2020, 8:37am UTC](https://discuss.pynq.io/t/pynq-z1-done-and-ld13-are-on-but-it-seems-like-both-is-stuck/1383/3 "2020-06-18T08:37:30Z")
@marioruiz Hi, I haven’t tried reflashing the microsd but I can capture the output of the serial terminal. I can log into **xilinx@pynq:**. It was working fine when I used last time. I can login to Jupyter. I have updated the date manually in Xilinx terminal. ---
**Author:** ![cathalmccabe](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/cathalmccabe/32/3348_2.png) [@cathalmccabe](https://discuss.pynq.io/u/cathalmccabe)\ **Post date:** [June 18, 2020, 8:59am UTC](https://discuss.pynq.io/t/pynq-z1-done-and-ld13-are-on-but-it-seems-like-both-is-stuck/1383/4 "2020-06-18T08:59:09Z")
There is a startup script that runs to flash the LEDs. Perhaps you modified this, of for some reason it is not running or has been disabled. See info here if you want to try and check this: > [@Starting PYNQ Programs At Boot](https://discuss.pynq.io/t/starting-pynq-programs-at-boot/1305): > > This post is designed to give an overview of how to get your own program to start when the PYNQ board boots while also giving an introduction to systemd. If you are only interested in the recipe feel free to skip to the end of the post where I give two ways of getting your script booting. Systemd Systemd is now the default init system for most Linux distributions including Ubuntu 2018.04 on which PYNQ Linux is based. Systemd uses a configuration file based approach for defining services which … If you can log in to Jupyter and everything else seems to be working, then I wouldn’t be too concerned about the LEDs not flashing if you don’t see any other issues. If you have other issues, re-flashing the SD card may be the best option as @marioruiz suggested. Cathal ---
**Author:** ![hazelmh](https://avatars.discourse-cdn.com/v4/letter/h/c5a1d2/32.png) [@hazelmh](https://discuss.pynq.io/u/hazelmh)\ **Post date:** [June 18, 2020, 9:18am UTC](https://discuss.pynq.io/t/pynq-z1-done-and-ld13-are-on-but-it-seems-like-both-is-stuck/1383/5 "2020-06-18T09:18:22Z")
@cathalmccabe Thank you, I will try this.