> 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/display-is-frozen-or-dark.md).

# Display is frozen or dark

Your BactoBox® was running, then the display froze or went dark.

Did the display never come on at all? See [Does not power on](/troubleshooting/other-problems/does-not-power-on.md).

## The display went dark

Check the power indicator, the green LED on your BactoBox®.

<figure><img src="https://1589625940-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FQorx08wID6YNpw8pEV0j%2Fuploads%2Fgit-blob-263e61e909721cf242ef89cb407cdf22f7aaf7de%2FBactoBox-outline-right--G-to-J.png?alt=media" alt="Right side of BactoBox®. H marks the power indicator."><figcaption></figcaption></figure>

* **The power indicator is off.** Your BactoBox® lost power. Check that the power cable is fully inserted. A loose cable can cut the power. If the indicator stays off, follow [Does not power on](/troubleshooting/other-problems/does-not-power-on.md).
* **The power indicator is on.** Check the type of power supply. It must have a green LED and a smooth, flat top. If yours does not match, you need a new one. If it matches, it is most likely a hardware issue. Either way, [contact support](/troubleshooting/contact-support.md).

<figure><img src="https://1589625940-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FQorx08wID6YNpw8pEV0j%2Fuploads%2Fgit-blob-2278987e1e183300c094b4bb335bf7d8291fd30d%2Ffile.excalidraw%20(1).svg?alt=media" alt="Current power supply (left) and older power supply (right). The current one has a green LED and a smooth, flat top."><figcaption><p>Current power supply (left) and older power supply (right).</p></figcaption></figure>

## The display froze at the SBT logo

Your BactoBox® takes 2–3 minutes to start. The first start after a software update can take another 5–10 minutes.

If the SBT logo is still there after that, restart your BactoBox® with the rocker switch. If it stops at the logo again, [contact support](/troubleshooting/contact-support.md).

## The display froze somewhere else

Watch the clock at the top of the display. If it does not change for a minute, the display is frozen. This is a software issue.

{% stepper %}
{% step %}

#### Restart

Switch your BactoBox® off and on with the rocker switch.
{% endstep %}

{% step %}

#### Update BactoBox® software

We may have fixed it already. [Update BactoBox® software](/more/software/update-bactobox-r-software.md).
{% endstep %}

{% step %}

#### Contact support

[Contact support](/troubleshooting/contact-support.md), so we can fix it. A support case with a device data bundle gives us the data we need.
{% endstep %}
{% endstepper %}


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