# Slicer cannot be used on the extended screen

**URL:** <https://discourse.slicer.org/t/slicer-cannot-be-used-on-the-extended-screen/44710>\
**Category:** Support\
**Created:** [October 9, 2025, 5:23pm UTC](https://discourse.slicer.org/t/slicer-cannot-be-used-on-the-extended-screen/44710 "2025-10-09T17:23:33Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Cr\_C](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/cr_c/32/81220_2.png) [@Cr\_C](https://discourse.slicer.org/u/Cr_C)\
**Post date:** [October 9, 2025, 5:23pm UTC](https://discourse.slicer.org/t/slicer-cannot-be-used-on-the-extended-screen/44710/1 "2025-10-09T17:23:33Z")

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Slicer becomes unusable after I connect the extended display  
There were no issues using Slicer on my laptop before connecting the external display. After connecting the extended display via HDMI, I dragged the Slicer window onto the extended screen and then closed the software. When I reopened it, it showed a white screen that was unresponsive.

I am using Slicer 5.8.1, and the extended display is a Lenovo B2412Q-R with a resolution of 2560x1440 and a refresh rate of 99.98Hz.

The original screen was the internal display of an Alienware m15R2, with a resolution of 1920x1080 and a refresh rate of 240Hz

I noticed that Display 1 (Alienware m15R2) shows connected to Intel (R) UHD Graphics 630, and Display 2 (B2412Q-R) shows connected to NVIDIA GeForce RTX 2060. I don’t know if this makes a difference.  
Can anyone help solve my problem?Slicer becomes unusable after I connect the extended display There were no issues using Slicer on my laptop before connecting the external display. After connecting the extended display via HDMI, I dragged the Slicer window onto the extended screen and then closed the software. When I reopened it, it showed a white screen that was unresponsive. I am using Slicer 5.8.1, and the extended display is a Lenovo B2412Q-R with a resolution of 2560x1440 and a refresh rate of 99.98Hz. The original screen was the internal display of an Alienware m15R2, with a resolution of 1920x1080 and a refresh rate of 240Hz I noticed that Display 1 (Alienware m15R2) shows connected to Intel (R) UHD Graphics 630, and Display 2 (B2412Q-R) shows connected to NVIDIA GeForce RTX 2060. I don’t know if this makes a difference. Can anyone help solve my problem? 😭