If Rhino fails to start or crashes while starting on your computer, here are some things you can do to understand what is happening on your computer and fix the problem.

• Start in the simplest way
  • Double click an icon on your desktop or click an item in your startup menu.
  • Don't double-click a file or drag-and-drop a file to start Rhino for now.
    • Once Rhino runs in the simplest way, we can move to those other things.
  • If Rhino starts by double clicking an icon or clicking a menu, there may be a problem with a specific file.

• Start in SafeMode.
  • SafeMode starts Rhino without using accelerated graphics and without loading plug-ins
  • On the Windows Start Menu, click the item titled
    • Rhinoceros 5.0 in Safe Mode or
    • Rhinoceros 5.0 (64-bit) in Safe Mode
    • Answer Yes to loading Toolbars and No to loading RDK.

• If Rhino starts in SafeMode, there is likely a problem with a video driver or a plug-in.
  • In the Rhino menu: Tools - Options - View - OpenGL, Uncheck the box at the top labeled Use accelerated hardware modes.
  • Close Rhino and start normally (not using SafeMode).

• If Rhino starts with accelerated hardware disabled, the problem is likely your video card driver.
  • Download and install a current driver for your video card. Its best to get your driver update from your hardware manufacturer and not from a third-party site.
    • nVidia: http://www.nvidia.com/Download/index.aspx
    • Intel: http://downloadcenter.intel.com/Default.aspx
    • ATI/AMD: http://support.amd.com/us/gpudownload/Pages/index.aspx
    • Apple: http://support.apple.com/downloads/#bootcamp
    • Other site appropriate to your video hardware
    • Note: If you're on a laptop, you'll probably have to get your driver update from the laptop maker.
  • Restart Rhino normally (not using SafeMode).

• If Rhino still crashes after disabling hardware acceleration, the problem may be a plug-in.
  • Restart in SafeMode, and Check the box for Use accelerated hardware modes.
  • In the Rhino menu: Tools - Options - Plug-ins, Uncheck the Enabled box for all of the plug-ins that did not ship with Rhino, and Check the box Ask to load disabled plug-ins at the bottom.
  • Close Rhino and start normally (not using SafeMode).
    • Answer No to loading all of the plug-ins you disabled.

• If Rhino starts with some plug-ins disabled, the problem is one of the disabled plug-ins.
  • Restart Rhino normally and answer Yes to loading one plug-in at a time and No to the rest until you determine which one causes the problem.
  • When you have determined which plug-in causes a problem, go back to Tools - Options - Plug-ins and Check the Enabled box for all of the plug-ins that don't cause a problem.

• If Rhino crashes in SafeMode or you can't resolve the problem with these methods, contact us at http://www.rhino3d.com/support for help.

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