Windows 7: No HDMI output on TV anymore

Hi

Ive been toiling away with this problem for some time, I used to be able to get sound on my TV when I ran Vista and since upgrading to Windows 7 I have had problens. I used to be able to have sound until I ran an application and the sound would go and not come back unless a restart was done.

I tied reinstalling both audio and video drivers and now I have video but no audo at all. It is picking up my TV, and it is selected as the default device but no more sound.

Im at a total loss as to what to do except buy a new laptop or desktop. Im running a:


Product Description: Samsung R70 Core 2 Duo T7100 1.8 GHz - 15.4" TFT
Dimensions (WxDxH): 35.8 cm x 26.4 cm x 3.7 cm
Weight: 2.7 kg
Localisation: United Kingdom
Platform Technology: Intel Centrino Duo
System Type: Notebook
Built-in Devices: Stereo speakers, wireless LAN aerial
Processor: Intel Core 2 Duo T7100 / 1.8 GHz ( Dual-Core )
Cache Memory: 2 MB - L2 Cache
RAM: 1 GB (installed) / 4 GB (max) - DDR2 SDRAM - 667 MHz - PC2-5300 ( 1 x 1 GB )
Card Reader: 6 in 1
Hard Drive: 120 GB - Serial ATA-150 - 5400 rpm
Optical Storage: DVD±RW (+R double layer) / DVD-RAM
Display: 15.4" TFT 1280 x 800 ( WXGA )
Graphics Controller: NVIDIA GeForce 8400M GS
Video Memory: 128 MB DDR3 SDRAM
Audio Output: Sound card
Telecom: Fax / modem - 56 Kbps
Networking: Network adapter - Ethernet, Fast Ethernet, IEEE 802.11b, IEEE 802.11a, IEEE 802.11g
Wireless NIC: Intel PRO/Wireless 3945ABG
Notebook Camera: Integrated - 1.3 Megapixel
Input Device: Keyboard, touchpad
Battery: Lithium Ion

Support for NP-R70 SAMSUNG#

The TV is a 26PFL5403D/10:
26PFL5403D/10 Philips LCD TV 26PFL5403D 26" DVB-T with Digital Crystal Clear - Philips Support

I know the TV is fine as it also does it on my big 42" LG in my living room. Please help! its driving me mad

Ok Ive managed to reinstall my Realtek drivers and are now back to square one. I have sound until I run an application, I dont know how important it is that the ones ive been testing are games that are a wee bit old e.g. aliens vs predator gold edition, american mcghees alice, bridge commander etc.

I got max payne working with patches but now it dosnt work. can anyone help me further?

This may not be true on all machines, but on some you need a separate driver for HDMI Audio. For example on ASRock ION machines you install the VIA audio driver first then there's a second driver to activate HDMI audio...

Have you checked the Samsung website?

Hmmm maybe, I honestly wouldnt know where to start looking for those drivers. Checked the samsung site, no tech support for windows 7, i have the vista drivers installed just now.

I should prob mention I installed civ IV and the new colonization and it does the same thing so its not just old games

Have you updated your graphics drivers?

Check your playback device is set to HDMI as the default. Also, 1 device can be muted while another still plays sound. Some of my appz auto-change the device. I'm an audiophile and totally disappointed by the limitations and bugs with audio support on 7.

Hope it worx!

Yeah I have the latest Nvidia drivers.

Ive got the TV as the default device and the speakers on the laptop muted but still the same problem. If I make the laptop speakers the default I can get sound with my games. Its very strange that it does it on all programs except for itunes and media player.

I have the same problem but im using a DVI to HDMI adaptor , so no sound this way. I also use a separate stereo cable for audio. It was working fine untill someday when the sound was gone. I have a Acer 7520G laptop and a Sony tv kdl32w4000. When i use a diferent computer with the tv everything is fine , i have sound. When i connect my laptop to the tv the sound works only for 1 second until the image comes on. So i think maybe the laptop sends some kind of MUTE signal or something, i dont know. I have the latest drivers for video card (8600M GT)197.14 and Realtek audio driver ver.6.0.1.5832 .
Does anybody know how to fix this?