# Slicer opening screen error horizontal green lines

**URL:** <https://discourse.slicer.org/t/slicer-opening-screen-error-horizontal-green-lines/12590>\
**Category:** Support\
**Created:** [July 17, 2020, 4:09am UTC](https://discourse.slicer.org/t/slicer-opening-screen-error-horizontal-green-lines/12590 "2020-07-17T04:09:12Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![AT3432984](https://avatars.discourse-cdn.com/v4/letter/a/f04885/32.png) [@AT3432984](https://discourse.slicer.org/u/AT3432984)\
**Post date:** [July 17, 2020, 4:09am UTC](https://discourse.slicer.org/t/slicer-opening-screen-error-horizontal-green-lines/12590/1 "2020-07-17T04:09:12Z")

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Hi,

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/0/f/0f23d5ed1345aaaae697340721c94409df0c9ab9.png)

I am having trouble when opening 3D Slicer. I have had this program for a while and it always works fine, but now when I open it I get a bunch of green lines across the screen. I have looked at the following 2 pages but I still can’t seem to fix it.

> [@Slicer opening screen error - Green Stripes](https://discourse.slicer.org/t/slicer-opening-screen-error-green-stripes/12543):
>
> Hey. Today, upon opening slicer my program is showing striped green lines across the entire program. Yesterday the program worked and nothing has changed overnight. I uninstalled and reinstalled, restarted, and did everything I know to do. Any advice? [image]

> [@Green horizontal lines appear in Slicer-4.10.2 at startup](https://discourse.slicer.org/t/bug-with-slicer/12090):
>
> Operating system: Windows 10 i7 Slicer version: 4.10.2 Hi all I have been using slicer with my pc for quite sometime. However, out of the blue, the following happen to my slicer as shown in the image below. I had tried reinstalling it but it does not work. Do you have any idea what is happening? Thank you [image]

I have uninstalled and re-installed the program several times. I can’t seem to find where the .ini files are to delete them.

I have also tried this but I nothing shows up and I cant find the path

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/7/0/70bd966710f0c191450fad51ca8d0e901a0a35ad.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:** [July 17, 2020, 4:28am UTC](https://discourse.slicer.org/t/slicer-opening-screen-error-horizontal-green-lines/12590/2 "2020-07-17T04:28:04Z")

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A post was merged into an existing topic: [Slicer opening screen error - Green Stripes](https://discourse.slicer.org/t/slicer-opening-screen-error-green-stripes/12543)

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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:** [July 17, 2020, 4:28am UTC](https://discourse.slicer.org/t/slicer-opening-screen-error-horizontal-green-lines/12590/3 "2020-07-17T04:28:04Z")

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