Inventor closing /shutting down

[LUCAS2005]

Inventor keeps closing within 20 secs 

[solson]

With crashes like this, I usually start to see if there is a Certified Driver for your graphic card.  Here is a link to the Certified Driver finder.

http://usa.autodesk.com/adsk/servlet/syscert?siteID=123112&id=18844534

Is this a new install?  If so, it may not have installed properly, or needs a service pack or hotfix.  Here is a link to where you can find service packs and hotfixes.

https://knowledge.autodesk.com/download

If neither of these help, I did hear of a scenario a few years ago where the graphic card driver prevented the program from launching.

Hope this helps,

Steve

[George-Roberts]

Are there any errors when it closes? Does anything show up in the windows logs?