laptop to tv via hdmi

kingscurate

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Was watching a lovefilm stream from the laptop to the tv via hdmi, and the tv lost sound. so checked tv through normal tv mode was working ok, checked laptop was producing sound ok.
Went to control panel and sound, and ticked the laptop option for sound, but what has gone wrong, i checked connection to both tv and laptop and that was ok but i will double check.
I also tried a movie through wmp and vlc and still no sound, so am willing to listen to suggestions please.
 

My Computer My Computer

At a glance

win 7 home premium 64 bitintel I5 3470 3.2ghz12gbasus radeon 5450 512mb
Computer type
PC/Desktop
Computer Manufacturer/Model Number
gigabyte z77-d3sh
OS
win 7 home premium 64 bit
CPU
intel I5 3470 3.2ghz
Motherboard
gigabyte z77-d3sh
Memory
12gb
Graphics Card(s)
asus radeon 5450 512mb
Sound Card
no
Monitor(s) Displays
viewsonic
Screen Resolution
1920*1080
Hard Drives
Crucial m4 sata 3 SSD
PSU
0cz
Case
corair carbide 200
Cooling
corsair h60
Keyboard
wireless logitech
Internet Speed
60 mbs
The HDMI needs to be set for default audio playback in order to have HDMI audio.

Reboot the PC and see if that fixes it.

If not, most HDMI audio is generated internally in the video card so reinstall the video drivers and see if that does the trick.
 

My Computer My Computer

At a glance

Windows 10 64 bitIntel i7 6700K16GB Corsair DominatorIntel CPU Graphics
Computer type
PC/Desktop
Computer Manufacturer/Model Number
My Own Build
OS
Windows 10 64 bit
CPU
Intel i7 6700K
Motherboard
ASUS ROG Maximus VIII Hero
Memory
16GB Corsair Dominator
Graphics Card(s)
Intel CPU Graphics
Sound Card
RealTek
Monitor(s) Displays
27" Dell S2719dgf
Screen Resolution
2560X1440
Hard Drives
1 TB Samsung 850 EVO SSD for Win 10 Pro
500GB Samsung 850 EVO SSD for Win 10 Insider
2 TB drive for backup
PSU
EVGA Supernova 750G2
Case
BeQuiet Silent Base 600
Cooling
Deepcool Captain 120EX
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Microsoft Wireless 2000
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Microsoft wireless
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100 MB/sec (Cable)
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Microsoft Defender and Malwarebytes
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Edge/Firefox
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Cakewalk (Sonar) by BandLab and Studio One 4.1 Pro recording studio software. MOTU 896Mk3 Hybrid recording interface, Frontier Tranzport wireless control unit, Behringer X-Touch Control Surface.
Five USB connected optical drives for CD Audio production using Nero BurningROM
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