# Slicer - black screen when opening stls or nrrds

**URL:** <https://discourse.slicer.org/t/slicer-black-screen-when-opening-stls-or-nrrds/10140>\
**Category:** Support\
**Created:** [February 6, 2020, 2:57pm UTC](https://discourse.slicer.org/t/slicer-black-screen-when-opening-stls-or-nrrds/10140 "2020-02-06T14:57:56Z")\
**Posts on this page:** 10\
**Page:** 1

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**Author:** ![Mikolaj](https://avatars.discourse-cdn.com/v4/letter/m/c89c15/32.png) [@Mikolaj](https://discourse.slicer.org/u/Mikolaj)\
**Post date:** [February 6, 2020, 2:57pm UTC](https://discourse.slicer.org/t/slicer-black-screen-when-opening-stls-or-nrrds/10140/1 "2020-02-06T14:57:56Z")

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Hi!  
I’m having problem with Slicer. When importing stl or nrrd (drag’n drop or import) the programme shows only black screens. Literally nothing happens.  
Another thing is that I don’t know how to install sequences extension.

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**Author:** ![Mikolaj](https://avatars.discourse-cdn.com/v4/letter/m/c89c15/32.png) [@Mikolaj](https://discourse.slicer.org/u/Mikolaj)\
**Post date:** [February 6, 2020, 4:04pm UTC](https://discourse.slicer.org/t/slicer-black-screen-when-opening-stls-or-nrrds/10140/2 "2020-02-06T16:04:08Z")

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Installing done 😃 But nrrd problem stayed.

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [February 6, 2020, 5:54pm UTC](https://discourse.slicer.org/t/slicer-black-screen-when-opening-stls-or-nrrds/10140/3 "2020-02-06T17:54:35Z")

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Sounds like this kind of issue:

> [@Black screen after downloading Slicer](https://discourse.slicer.org/t/black-screen-after-downloading-slicer/1574/9):
>
> Hi. I use a 64bit Windows 10 Enterprise version. I tried both 4.10 and 4.11 versions but still have the same problem and at start up I see only 4 black rectenangles.

> [@Why I have black screen?](https://discourse.slicer.org/t/why-i-have-black-screen/6902/4):
>
> Thanks for the additional information. If you update graphics card drivers to the latest version and/or upgrade the operating system to Windows10 then there may be a chance that Slicer will work on that computer.

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**Author:** ![Mikolaj](https://avatars.discourse-cdn.com/v4/letter/m/c89c15/32.png) [@Mikolaj](https://discourse.slicer.org/u/Mikolaj)\
**Post date:** [February 6, 2020, 8:16pm UTC](https://discourse.slicer.org/t/slicer-black-screen-when-opening-stls-or-nrrds/10140/4 "2020-02-06T20:16:14Z")

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Installed newest drivers for nvidia mx250. It’s a laptop (MSI PS42 8RA).

Nothing’s changed ☹

Tried with samples from embodi3d as well as with official slicer samples.

As for the guy who had 4 black rectangles - I see 3 with 4th being the pink cube.

Dicoms work fine.

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [February 7, 2020, 4:37pm UTC](https://discourse.slicer.org/t/slicer-black-screen-when-opening-stls-or-nrrds/10140/5 "2020-02-07T16:37:21Z")

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> [@Mikolaj](#):
>
> As for the guy who had 4 black rectangles - I see 3 with 4th being the pink cube.

This means that it is probably not an OpenGL issue then.

STL files only supposed to show up in the 3D view by default. Click in the 3D view and click the small rectangle icon to center the view to the scene content. You may also hit r key to reset zoom.

nrrd files should show up in slice views. You can go to Volumes module to check if the file was loaded correctly (has reasonable dimensions and range of values).

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [February 8, 2020, 6:44pm UTC](https://discourse.slicer.org/t/slicer-black-screen-when-opening-stls-or-nrrds/10140/6 "2020-02-08T18:44:13Z")

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I received the images from @Mikolaj and they were all loaded without issues. The two nrrds and models are all at different locations - you need to click the center field of view to make sure they show up in the selected view.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/e/7/e7302e1c78dc4cc7b459d2b466d6959d79c6a3a9.jpeg)

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**Author:** ![Mikolaj](https://avatars.discourse-cdn.com/v4/letter/m/c89c15/32.png) [@Mikolaj](https://discourse.slicer.org/u/Mikolaj)\
**Post date:** [February 8, 2020, 8:22pm UTC](https://discourse.slicer.org/t/slicer-black-screen-when-opening-stls-or-nrrds/10140/7 "2020-02-08T20:22:40Z")

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Installed new 4.11 slicer - makes no difference 😕 Center or not, it just doesn’t load the files.

Checked on my friends 'kintosh - all works well there, and according to your instruction - one of the objects was waaaay out of the box 😃

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**Author:** ![Mikolaj](https://avatars.discourse-cdn.com/v4/letter/m/c89c15/32.png) [@Mikolaj](https://discourse.slicer.org/u/Mikolaj)\
**Post date:** [February 8, 2020, 8:38pm UTC](https://discourse.slicer.org/t/slicer-black-screen-when-opening-stls-or-nrrds/10140/8 "2020-02-08T20:38:32Z")

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![slicer problem 1](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/7/5/75c71d359ea1eca1e131ebd8a2ea0e42050e1eb8.png) ![slicer problem 2](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/7/c/7c6e4466dc5789957e5e0b6e69d9b56ff14f402c.png) ![slicer problem 3](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/c/3/c3dfc76703e91a2747d6476ee94889d6925f154a.png) ![slicer problem 4](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/9/d/9d7174d799a069df23f2a528fd689fa5670e7668.png)

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [February 8, 2020, 9:09pm UTC](https://discourse.slicer.org/t/slicer-black-screen-when-opening-stls-or-nrrds/10140/9 "2020-02-08T21:09:04Z")

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Oh, I see your screenshots now. Files cannot be loaded from folders that contain special characters. ASCII maybe Latin1 characters are safe, but many Polish characters are not. Rename the parent folders or move your files to a different directory. I’ve [submitted an issue](https://issues.slicer.org/view.php?id=4723) to improve Slicer in this (at least display a meaningful error message).

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**Author:** ![Mikolaj](https://avatars.discourse-cdn.com/v4/letter/m/c89c15/32.png) [@Mikolaj](https://discourse.slicer.org/u/Mikolaj)\
**Post date:** [February 10, 2020, 4:21pm UTC](https://discourse.slicer.org/t/slicer-black-screen-when-opening-stls-or-nrrds/10140/10 "2020-02-10T16:21:06Z")

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Thanks Andras!  
That solved the problem :D. Main user name also had special characters so… only main directory

Big Thanks!