Try to re-create the problem in your application. If the problem occurs, it may be related to a font installed by Windows. If the problem doesn't occur, move a small group of fonts back into the Fonts folder, and then restart Windows.
Note: For instructions on how to check font integrity, refer to document "Troubleshoot font problems (Windows)" (TechNote 328607).
To isolate fonts that are installed through a font utility, refer to the utility manufacturer's instructions.
The Adobe Captivate demonstration below illustrates how to reduce the number of active fonts. For more information about viewing this demo, see Viewing Adobe Captivate Demos in Knowledgebase Documents (TechNote kb403894).