Norton Utilities 15 disables computer reboot

I am running XP professional, 32-bit.  I recently renewed my subscription to Norton Internet Security and also bought Norton Utilities 15.  Since I installed NU15, my computer will no longer reboot, only shutdown. I press restart, it does a soft shutdown. I have done "shutdown -r" from the command line and the C prompt.  It just shuts down.  I have to manually restart it,.  Every source I checked for this problem said to look at the last software installation.  That would be Norton Utilities 15.