# SLICER 4.9 software does not work after installation.

**URL:** <https://discourse.slicer.org/t/slicer-4-9-software-does-not-work-after-installation/4045>\
**Category:** Support\
**Created:** [September 10, 2018, 1:32pm UTC](https://discourse.slicer.org/t/slicer-4-9-software-does-not-work-after-installation/4045 "2018-09-10T13:32:07Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![zhaoduanyun](https://avatars.discourse-cdn.com/v4/letter/z/c68b51/32.png) [@zhaoduanyun](https://discourse.slicer.org/u/zhaoduanyun)\
**Post date:** [September 10, 2018, 1:32pm UTC](https://discourse.slicer.org/t/slicer-4-9-software-does-not-work-after-installation/4045/1 "2018-09-10T13:32:07Z")

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Operating system:Windows 7 Pro SP1 64 bit  
Slicer version:4.9 nightlybuild  
Expected behavior:Running normally after installation  
Actual behavior:The software was installed successfully, but double-clicking on the icon didn’t respond，or the interface starts to flash past, and then there is no response. I’ve deleted the.Ini file from the NA-MIC directory, but it still does not solve any problems, while earlier versions can run normally.

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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:** [September 10, 2018, 5:32pm UTC](https://discourse.slicer.org/t/slicer-4-9-software-does-not-work-after-installation/4045/2 "2018-09-10T17:32:33Z")

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Graphics card minimum requirements have been increased in Slicer-4.9. What is your graphics card brand and model? What is the graphics card driver version?

Updating your driver may fix the issue. If it does not help, follow [these instructions](https://www.slicer.org/wiki/Documentation/Nightly/Developers/Tutorials/Troubleshooting#Debugging_Slicer_application_startup_issues).

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**Author:** ![zhaoduanyun](https://avatars.discourse-cdn.com/v4/letter/z/c68b51/32.png) [@zhaoduanyun](https://discourse.slicer.org/u/zhaoduanyun)\
**Post date:** [September 11, 2018, 2:33pm UTC](https://discourse.slicer.org/t/slicer-4-9-software-does-not-work-after-installation/4045/3 "2018-09-11T14:33:23Z")

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Thank you for your reply.  
My graphics card is NVIDIA GeForce GTX950,and the driver version is 10.18.13.6143,it is the latest version.  
I don’t think it’s a problem with the graphics card or the driver. Some colleagues think it is a problem with the win7 system. It is not very compatible with the slicer 4.9. So I also ran eventvwr.exe trying to find some clues, but found nothing.

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**Author:** ![cpinter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/cpinter/32/7995_2.png) [@cpinter](https://discourse.slicer.org/u/cpinter)\
**Post date:** [September 11, 2018, 2:38pm UTC](https://discourse.slicer.org/t/slicer-4-9-software-does-not-work-after-installation/4045/4 "2018-09-11T14:38:52Z")

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Is there a log file? If yes, what is in there? You can find it in your user’s Temp folder called Slicer\_NNNNN\_DATE\_TIME.log.

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**Author:** ![zhaoduanyun](https://avatars.discourse-cdn.com/v4/letter/z/c68b51/32.png) [@zhaoduanyun](https://discourse.slicer.org/u/zhaoduanyun)\
**Post date:** [September 11, 2018, 3:14pm UTC](https://discourse.slicer.org/t/slicer-4-9-software-does-not-work-after-installation/4045/5 "2018-09-11T15:14:56Z")

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Thank you for your reply.  
In this TEMP directory, I found the .log files, but they are all about the versions that were previously runable, while there are no files for this inoperable version.  
In a word, the program doesn’t seem to have been run. It left no trace.  
It’s very strange.

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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:** [September 11, 2018, 6:31pm UTC](https://discourse.slicer.org/t/slicer-4-9-software-does-not-work-after-installation/4045/6 "2018-09-11T18:31:47Z")

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Probably you’ll find a solution if you continue with the instructions on the link referenced above (check “There may be conflicting DLLs in your system path” section).