# DGX Spark boots to either black screen or NVIDIA logo and I cannot access GRUB

**URL:** <https://forums.developer.nvidia.com/t/dgx-spark-boots-to-either-black-screen-or-nvidia-logo-and-i-cannot-access-grub/365766>\
**Category:** DGX Spark / GB10\
**Tags:** kernel\
**Created:** [April 6, 2026, 10:12pm UTC](https://forums.developer.nvidia.com/t/dgx-spark-boots-to-either-black-screen-or-nvidia-logo-and-i-cannot-access-grub/365766 "2026-04-06T22:12:35Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![tahmid.awal](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@tahmid.awal](https://forums.developer.nvidia.com/u/tahmid.awal)\
**Post date:** [April 6, 2026, 10:12pm UTC](https://forums.developer.nvidia.com/t/dgx-spark-boots-to-either-black-screen-or-nvidia-logo-and-i-cannot-access-grub/365766/1 "2026-04-06T22:12:35Z")

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Hi everyone,

I am having a boot issue on my DGX Spark and would appreciate any help.

What happened:

- I believe I ran `sudo apt update`
- After restarting, the system no longer boots properly
- It now goes to a complete black screen
- I cannot get back into Ubuntu at all

What I can access:

- I can access BIOS/UEFI
- I cannot access GRUB

What I already tried:

- I looked online and saw that on DGX Spark, `Left Shift + Insert` might open GRUB
- I tried that multiple times
- It does not work for me
- I am using a wired keyboard

Current status:

- Every boot ends in a black screen
- I am unable to log in or reach recovery options

Questions:

1. Is there another reliable way to access GRUB on DGX Spark?
2. Is this likely caused by an Ubuntu/NVIDIA boot issue after package updates?
3. What are my best recovery options from here?
4. If GRUB is inaccessible, is USB recovery or reinstall the recommended path?

System:

- DGX Spark
- Ubuntu 24.04

Any guidance would be really appreciated. Thanks.

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<div class="post-metadata">

**Author:** ![user158576](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@user158576](https://forums.developer.nvidia.com/u/user158576)\
**Post date:** [April 7, 2026, 6:15pm UTC](https://forums.developer.nvidia.com/t/dgx-spark-boots-to-either-black-screen-or-nvidia-logo-and-i-cannot-access-grub/365766/3 "2026-04-07T18:15:38Z")

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You will need to use “sudo apt dist-upgrade” or “full-upgrade“ or going to the Dashboard to do upgrade from there.  
Your system might have ended up → half-upgraded  
To go to the GRUB menu PRESS&HOLD “Shift” and “Insert” button together during boot up