# Hyperpixel 4 doesn't work on Rasp Pi 3b+ nor my Rasp Zero W - screen doesn't power up at all
**URL:** https://forums.pimoroni.com/t/hyperpixel-4-doesnt-work-on-rasp-pi-3b-nor-my-rasp-zero-w-screen-doesnt-power-up-at-all/12065
**Category:** Support
**Created:** [November 2, 2019, 5:46am UTC](https://forums.pimoroni.com/t/hyperpixel-4-doesnt-work-on-rasp-pi-3b-nor-my-rasp-zero-w-screen-doesnt-power-up-at-all/12065 "2019-11-02T05:46:12Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@comeonwork](https://forums.pimoroni.com/u/comeonwork)
#### Post date: [November 2, 2019, 5:46am UTC](https://forums.pimoroni.com/t/hyperpixel-4-doesnt-work-on-rasp-pi-3b-nor-my-rasp-zero-w-screen-doesnt-power-up-at-all/12065/1 "2019-11-02T05:46:12Z")
I installed the Hyperpixel 4 on both units, reflashed using both raspbian full and raspbian lite. Followed the instructions here : [https://learn.pimoroni.com/tutorial/sandyj/getting-started-with-hyperpixel-4](https://learn.pimoroni.com/tutorial/sandyj/getting-started-with-hyperpixel-4)
nothing on my hyperpixel when it reboots. not even a backlight. able to ssh into both units.
do i have a defective hyperpixel? spent almost 8 hours today following the basic instructions and it’s not working.
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### Author:  [@alphanumeric](https://forums.pimoroni.com/u/alphanumeric)
#### Post date: [November 2, 2019, 8:53am UTC](https://forums.pimoroni.com/t/hyperpixel-4-doesnt-work-on-rasp-pi-3b-nor-my-rasp-zero-w-screen-doesnt-power-up-at-all/12065/2 "2019-11-02T08:53:14Z")
I have to ask the obvious, firmly attached to the Pi’s GPIO?
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### Author:  [@comeonwork](https://forums.pimoroni.com/u/comeonwork)
#### Post date: [November 2, 2019, 5:00pm UTC](https://forums.pimoroni.com/t/hyperpixel-4-doesnt-work-on-rasp-pi-3b-nor-my-rasp-zero-w-screen-doesnt-power-up-at-all/12065/3 "2019-11-02T17:00:15Z")
yes. all the way in and solidly bolted on my rasp pi.
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### Author:  [@alphanumeric](https://forums.pimoroni.com/u/alphanumeric)
#### Post date: [November 2, 2019, 7:01pm UTC](https://forums.pimoroni.com/t/hyperpixel-4-doesnt-work-on-rasp-pi-3b-nor-my-rasp-zero-w-screen-doesnt-power-up-at-all/12065/4 "2019-11-02T19:01:19Z")
Are you running Buster? Buster seems to have some quirks that mess with things. You can get Stretch here if need be, for testing purposes. It should tell you if its hardware or software. If it works you know its a Buster issue, if it still doesn’t work its more than likely defective.
[http://downloads.raspberrypi.org/raspbian/images/](http://downloads.raspberrypi.org/raspbian/images/)
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### Author:  [@comeonwork](https://forums.pimoroni.com/u/comeonwork)
#### Post date: [November 2, 2019, 8:43pm UTC](https://forums.pimoroni.com/t/hyperpixel-4-doesnt-work-on-rasp-pi-3b-nor-my-rasp-zero-w-screen-doesnt-power-up-at-all/12065/5 "2019-11-02T20:43:26Z")
> Are you running Buster? Buster seems to have some quirks that mess with things.
Yes.
Just tried again - reinstalled with Stretch. Ran through the listed process - nothing. hyperpixel-init works though when I am ssh-ed into pi. Rebooted and still no image.
Am I supposed to have some kind of backlight? Apparently there’s supposed to be have some backlight regardless and I don’t have any on my case…
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### Author:  [@alphanumeric](https://forums.pimoroni.com/u/alphanumeric)
#### Post date: [November 2, 2019, 8:50pm UTC](https://forums.pimoroni.com/t/hyperpixel-4-doesnt-work-on-rasp-pi-3b-nor-my-rasp-zero-w-screen-doesnt-power-up-at-all/12065/6 "2019-11-02T20:50:40Z")
Just so you know I don’t own a hyperpixel. There are a few here on the forums that do though. I would think the backlight should be on regardless of anything else?
One option is to go here
[https://shop.pimoroni.com/pages/contact-us](https://shop.pimoroni.com/pages/contact-us)
And send them an e-mail witha link to this thread.