> For the complete documentation index, see [llms.txt](https://help.sbtinstruments.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.sbtinstruments.com/troubleshooting/other-problems/stuck-at-spinner.md).

# Stuck at spinner

The screen says Initializing or Stopping and does not move on.

Your BactoBox® shows a progress spinner and does not move on. The screen title is *Initializing*, *Stopping* or similar.

<figure><img src="https://1589625940-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FQorx08wID6YNpw8pEV0j%2Fuploads%2Fgit-blob-0a9bfabc1a50776ff861a4f4f878cde445a86a25%2Fdash--stuck-at-progress-spinner.avif?alt=media" alt="BactoBox® stuck at the progress spinner. The title is Initializing."><figcaption><p>Stuck at the progress spinner. The title is <em>Initializing</em>.</p></figcaption></figure>

## The title is *Initializing*

This is the most common case.

{% stepper %}
{% step %}

#### Press <kbd>Stop</kbd>

The *Result* screen opens. It may be empty.

<figure><img src="https://1589625940-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FQorx08wID6YNpw8pEV0j%2Fuploads%2Fgit-blob-b04fe60f7cf93068dd45924614fd7efd4a161da8%2Fdash--fix-stuck-at-initializing.avif?alt=media" alt="Press Stop to reach the Result screen. It may be empty."><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### Press <kbd>Stop</kbd> again

You are back at the *Home* screen, and your BactoBox® is ready to use.

Did the title change to *Stopping* instead? See below.
{% endstep %}
{% endstepper %}

## The title is *Stopping*

This is rare. Button presses do not help, and neither does a restart on its own.

<figure><img src="https://1589625940-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FQorx08wID6YNpw8pEV0j%2Fuploads%2Fgit-blob-f40f8fb1f8f766aef303f8de98b3f26414b3ff48%2Fdash--stuck-at-stopping.avif?alt=media" alt="BactoBox® stuck at the progress spinner. The title is Stopping." width="375"><figcaption><p>The title is <em>Stopping</em>. Button presses do not help.</p></figcaption></figure>

{% stepper %}
{% step %}

#### Remove and reinsert the flow cell

Remove the flow cell. Then [insert it again](/getting-started/installation/install-flow-cell.md).
{% endstep %}

{% step %}

#### Restart

Switch your BactoBox® off and on with the rocker switch. Wait for the *Home* screen.
{% endstep %}

{% step %}

#### Press <kbd>Stop</kbd>

Dismiss any messages, then press <kbd>Stop</kbd>. Your BactoBox® is ready to use.
{% endstep %}
{% endstepper %}

## Why it happens

* Your BactoBox® lost power during a program.
* A software bug occurred during a program, for example [wal-db-corruption](/software/miscellaneous/known-software-issues.md#wal-db-corruption).

If it keeps happening, [contact support](/troubleshooting/contact-support.md).


---

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