VBox/Virtualbox solution to NS_ERROR_CALL_FAILED error
This is likely because you have 2D/3D acceleration enabled and your card doesn't support it.
Eg. you switched video card drivers or video cards that did support it.
The funny thing is that you CANNOT disable those options as they are "greyed" out in the VBox client GUI.
The config file has to be manually changed and fixed with these options "accelerate3D="false" accelerate2DVideo="false"
Here's how you fix it:
1.) Close all instances of the VBox Client
2.) Run the sed command below (replace XP.xml with the path to your VBox machine's configuration file)
*Note I recommend sed because there are actually usually multiple instances where the acceleration is enabled in the config file.
sed -i 's/accelerate3D="true"/accelerate3D="false"/g' XP.xml
sed -i 's/accelerate2DVideo="true"/accelerate2DVideo="false"/g' XP.xml
After the above I didn't get the error and was able to boot.
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