HDMI Sound Not Working

[Gibs960]

I've connected my laptop to my TV and the sound was working for 5 minutes and then it just went off, the image is still working and when I go on my sounds of control panel it's working with the test (Xylophone being played) but it won't work with things on the internet; I just played a DVD for a couple of minutes and it was working. Any help!?

[dbgtz]

Faulty cable? Tried wiggling it around and checking its plugged in properly?

[GommeInc]

Have you told the laptop to use the HDMI card to be the default device for the sound? Right Click the Sound Icon > Playback Devices and then whatever says HDMI sound out. It might be trying to use the laptop for sound. It happened a few times for an old PC computer I had :)