# Stuck at spinner

## Before you move on

You are here because your BactoBox® is stuck at a progress spinner. The screen title is "Initializing", "Stopping", or something similar.

<figure><img src="/files/dA5s06hFvnVgcuYYCklC" alt=""><figcaption><p>BactoBox® stuck at the progress spinner. The title is "Initializing".</p></figcaption></figure>

Is this not the case? Then let's take a step back. [Does your BactoBox® not power on](/troubleshooting/power-on-fails.md)? [Does the *QC test* program give errors](/troubleshooting/qualification-fails/i-get-error-40xx.md)?

See also [BactoBox® acting up?](/troubleshooting/bactobox-r-acting-up.md).

<img src="/files/4YvqkQVU1cELIaUHIgWW" alt="" class="gitbook-drawing">

## Screen title is "Initializing"

This is the most common case. Follow the steps below to fix this.

{% stepper %}
{% step %}

#### Press the <kbd>Stop</kbd> button

This switches to the *Result* screen. The *Result* screen may be empty as in the example below.

<figure><img src="/files/pUlrMKS7OhuUS6i6mHWX" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

#### That is it!

You can now use your BactoBox® again. Press <kbd>Stop</kbd> again to go to the *Home* screen.

{% hint style="danger" %}

### Did the title just change from "Initializing" to "Stopping"

See the dedicated [section just below](#screen-title-is-stopping) for this rare case.
{% endhint %}
{% endstep %}
{% endstepper %}

## Screen title is "Stopping"

This is a rare case. See the video below for an example.

<figure><img src="/files/9iuNO3B6a3BImjflKUNQ" alt="" width="375"><figcaption><p>BactoBox® stuck at a progress spinner. The screen title is "Stopping". Button presses do not help.</p></figcaption></figure>

On the surface of things, nothing helps:

* Button presses do not help
* Power off and on does not help
* Enter the menu and exit the menu does not help

It is indeed a stubborn case. Follow the steps below to fix this.

{% stepper %}
{% step %}

#### Remove the flow cell

{% endstep %}

{% step %}

#### Insert the flow cell

See [Install flow cell](/getting-started/installation/install-flow-cell.md)
{% endstep %}

{% step %}

#### Restart your BactoBox®

Flip the rocker switch.

Wait until your BactoBox® is at the *Home* screen again.
{% endstep %}

{% step %}

#### Press the <kbd>Stop</kbd> button

Dismiss any messages and finally press the <kbd>Stop</kbd> button a last time.
{% endstep %}

{% step %}

#### That is it!

Now your BactoBox® is back at the *Home* screen and ready to measure again.
{% endstep %}
{% endstepper %}

## Why does this happen?

The following may lead to the stuck-at-spinner situation:

* Your BactoBox® powered off during a program. E.g., sudden power loss during a measurement.
* A software bug occurred during a program. E.g., the [wal-db-corruption](/encyclopedia/software/bactobox-r-software-changelog/known-software-issues.md#wal-db-corruption) bug.


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