Navigation locks up
 

2008 Altima hybrid with a Bose sound system with nav. After about 15 minutes using the nav system, it starts to lock up a little at a time and eventually locks up completely. The arrow doesn't move and none of the menu buttons work. The sound system works fine. I've cleaned the head several times without success. Seems like the system gets hot and stops working. When I eject the CD it's very hot. If I eject the CD and place it back into the drive after it has locked up, it can't find the CD and gives a "No CD" message.

Any ides?

Thanks

maybe their something wrong with the cd you used, try other cd.