Sound goes out after reboot

Sound goes out after reboot

I have rebooted my tv and still no sound. Picture is great. No audio even after reboot. Brand new box and remote! Help!

ANSWERS:

"IN order to provide any reasonable guidance the following information is required:

1) Make and model of the TV

2) How is the cable box connected to the TV

3) Did this work for a while and stop or has it never worked.

Dan"