NAV 2010 Crashes my computer when I run the Performance feature

Has anyone encountered this? Every time I click “Performance” on the main window of NAV 2010, my computer crashes.  When I reboot, I get a Microsoft message that the computer has recovered from a serious error. NAV seems to run OK otherwise, but I have no idea what is causing this. I have already used the software removal tool and reinstalled. No difference.  Still crashes. Any ideas?