sound will not come out of my VIZIO HDMI TV connected. The video is OK. It wasn't a propblem until I upgraded from VISTA to Windows 7.

What graphics card you have?

What computer model?

This is my mums computer, a G - 70 HP, Windows 7 Service Pack 1

can't the unit today

If it comes to your laptop, HP G70-250US notebook PC, see here for the drivers.

Using 32 bit or 64 bit of Windows 7?

http://h10025.www1.HP.com/ewfrf/wc/softwareCategory?OS=4062&LC=en&cc=us&DLC=en&sw_lang=&product=3860225#N200

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