# When I shut down blender it does not shut down and my computer freezes

**URL:** <https://blenderartists.org/t/when-i-shut-down-blender-it-does-not-shut-down-and-my-computer-freezes/1288455>\
**Category:** Technical Support\
**Created:** [March 2, 2021, 3:25am UTC](https://blenderartists.org/t/when-i-shut-down-blender-it-does-not-shut-down-and-my-computer-freezes/1288455 "2021-03-02T03:25:20Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![bkjernisted](https://blenderartists.org/letter_avatar_proxy/v4/letter/b/58f4c7/32.png) [@bkjernisted](https://blenderartists.org/u/bkjernisted)\
**Post date:** [March 2, 2021, 3:25am UTC](https://blenderartists.org/t/when-i-shut-down-blender-it-does-not-shut-down-and-my-computer-freezes/1288455/1 "2021-03-02T03:25:20Z")

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I have to shut the computer down with the power switch on the back of the computer. ![Capture](https://blenderartists.org/uploads/default/original/4X/d/f/6/df6de953fc069311ba5bcff2e388b64dfae3b18d.jpeg) I am missing this dll. How do I get a replacement? Thanks

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**Author:** ![bkjernisted](https://blenderartists.org/letter_avatar_proxy/v4/letter/b/58f4c7/32.png) [@bkjernisted](https://blenderartists.org/u/bkjernisted)\
**Post date:** [March 2, 2021, 3:34am UTC](https://blenderartists.org/t/when-i-shut-down-blender-it-does-not-shut-down-and-my-computer-freezes/1288455/2 "2021-03-02T03:34:00Z")

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This is using 2.91.2. I had to shut off autosave to prevent the computer from freezing up while I was using blender. Today I had to switch from optix to cuda because my gpu rendering stopped working and a 10 minute render took 2 hrs and 45 minutes. I rolled back my Nvidia driver to 460.89 and I will see if that helps, but it did not prevent my computer from freezing on shut down.