# Pynq Z2 board boot

**URL:** <https://discuss.pynq.io/t/pynq-z2-board-boot/7123>\
**Category:** Support\
**Created:** [June 10, 2024, 11:08pm UTC](https://discuss.pynq.io/t/pynq-z2-board-boot/7123 "2024-06-10T23:08:37Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![cameron28202](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/cameron28202/32/5982_2.png) [@cameron28202](https://discuss.pynq.io/u/cameron28202)\
**Post date:** [June 10, 2024, 11:08pm UTC](https://discuss.pynq.io/t/pynq-z2-board-boot/7123/1 "2024-06-10T23:08:37Z")

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Hi,

I’m having trouble booting my PYNQ-Z2 board. I am only ever able to see the red LED light when I switch the board on when booting from the sd card. I have flashed the image onto two different SD cards. I have tried flashing this image with etcher and win32. All has the same result, I am never able to see the done light come on unless I take the jumper off of SD mode and in this case the LED’s above the switches flash.

I have also tried using two different micro usb cords to power as well as a wall adapter. I’m using an ethernet to usb-c adapter to connect to my laptop and assigning the static ip as it says in the documentation.

I was thinking of trying to create a QPSI image and flash it onto the board. Please let me know if there is anything else I can try!

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**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 11, 2024, 7:30am UTC](https://discuss.pynq.io/t/pynq-z2-board-boot/7123/2 "2024-06-11T07:30:14Z")

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Hi @cameron28202,

Welcome to the PYNQ community.

You can try checking the output of the serial port when the board is booting, perhaps you can see something there.

Mario

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**Author:** ![cameron28202](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/cameron28202/32/5982_2.png) [@cameron28202](https://discuss.pynq.io/u/cameron28202)\
**Post date:** [June 11, 2024, 9:29am UTC](https://discuss.pynq.io/t/pynq-z2-board-boot/7123/3 "2024-06-11T09:29:57Z")

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Hi, thanks for your response. I tried to see the serial output using PuTTY and I just get an empty terminal. I verified I found the correct COM port, used baud rate 115200 data bits 8 parity none stop bits 1 flow control none.

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**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 11, 2024, 10:34am UTC](https://discuss.pynq.io/t/pynq-z2-board-boot/7123/4 "2024-06-11T10:34:59Z")

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Hi @cameron28202,

You can try to see if Vivado detects it.  
But, from what you’re saying it would appear that the board is faulty.

Mario

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**Author:** ![jalektro](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/jalektro/32/6787_2.png) [@jalektro](https://discuss.pynq.io/u/jalektro)\
**Post date:** [October 1, 2024, 2:42pm UTC](https://discuss.pynq.io/t/pynq-z2-board-boot/7123/5 "2024-10-01T14:42:23Z")

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Hello, I’ve the same problem, connecting my pynq Z2 to the PC gives a com port, but when using Putty i don’t get a connection, when writing a vivado program to my pynq it is working. when i try without jumpers it is doing a normal program. i already tried different cables or new SD card but these are all working on other pynq Z2, is there something else i can try ? or will it be a HW failure ? thanks for a tip.