If you open Event Viewer you want to look inn Windows Logs > Application. Then once that grid loads up you'd look for a event log where the Level is "Error" and the source is "Application Error" Then look for one that mentions the faulting application name being BigBox.exe. Typically these come in pairs. One just says that Big Box faulted, and then another that has the actual error. The actual error is typically more useful, but both could be helpful.