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Windows 7: HDMI wont connect from laptop to home cinema but will connect to TV

03 Nov 2012   #1

Windows 7 home premium 64 bit
HDMI wont connect from laptop to home cinema but will connect to TV

Hi All,

This is my first time on this forum so forgive me if I am not too experienced with your answers with understanding how to do things! I also apologize if this in the wrong part of the forum, but I have searched for hours online trying to find something but haven’t been able to find anything similar :\.

Sorry to bore you to death in advance but I am going to explain the whole scenario!

The devices I have / have been used:

1. Toshiba 40" TV with 3 HDMI ports
2. ASUS a53e laptop
3. Xbox 360
4. LG HX 906PA home surround sound system (2 HDMI in / 1 HDMI out)
5. 5 different HDMI cables
6. Housemates laptop with HDMI port
7. housemates Samsung TV with HDMI port.

I originally just had the laptop and Xbox connected to the TV through two different HDMI cables into two HDMI ports on the TV, all worked lovely, no issues at all. I then decided to buy a home cinema system, (LG HX906PA) to add some good sound to the TV. I bought it in January 2012 and set it up so that the laptop and Xbox connected to the home cinema via two HDMI cables into the two HDMI in ports, with another HDMI cable going from the HDMI out port to the HDMI port on the TV.

For 6 or 7 months this was perfect, laptop would play videos and music on the TV with sound coming out in 5.1, Xbox in 5.1 etc.

Then over a period of time there would be connectivity issues, when watching video or listening to music the HDMI would drop for a second or two before reconnecting, similarly with the Xbox. This was slightly annoying but nothing major, I thought it was down to the HDMI cables, so I bought new ones, the problem was still there. Again this wasn't anything that majorly bothered me, I just knew something wasn't quite right, I unplugged the laptop and Xbox and put them back into the TV like before and this problem went away, so I thought it was an issue with the home cinema.

I went back to using the home cinema just for the laptop as I liked having music playing across all 5 speakers, although there would be a disconnection for probably 2 seconds every 30 mins or so during songs. The Xbox was plugged direct into the TV (as when playing games the second disconnection is very annoying).

In September 2012 all connection from laptop to home cinema lost connection, the laptop would detect the home cinema was plugged in but the home cinema wouldn’t play any audio / video when the laptop thought it was (the home cinema was still the default device on the laptop).

I tried plugging the Xbox back in and the Xbox wouldn’t work when being played through the home cinema, I tried five different HDMI cables in total and nothing would display / play audio. So I thought that the home cinema had broken. The home cinema would still play blue rays fine, it was anything through HDMI that wouldn’t play. I contacted LG and they took it away and couldn’t find any faults with the HDMI input / output and reset it back to factory settings, since having it back I tried connecting the Xbox and laptop again like before, the Xbox connects fine and there is no longer the issue (so far) of random disconnections for a few seconds. This was great news!

When I plugged the laptop in there was nothing, no video displayed, no audio however the laptop again would detect the home cinema was plugged in, I thought this was then a laptop issue, so I have updated the audio and display drivers, no luck there, I rolled back to the original drivers and still nothing. I thought the laptop must be not working, so I tried connecting the laptop to my housemates TV through HDMI which worked perfect, the laptop also connects to my TV no problems. I also connected my housemate’s laptop to the home cinema and that connected (typical) with audio and video being played through all the speakers and on the TV.

Sometimes when the laptop is connected to the home cinema the video is sometimes displayed but with a horrible green colour which is pixellated and with lines across, almost like it isn’t plugged in correct, possibly HDMI cable problems!? But the same HDMI cable connects fine for my housemate, and for my laptop in my housemates TV. So I’m struggling to come up with a solution.

I think it may be to do with certain settings now in on my laptop, if anyone has ANY ideas, can you please just fire away? Sorry for the essay but this has been bugging me for a few months now and after finding out that it isn’t the home cinema I am completely stuck for ideas of what it could be.

Regards, Coe1ho

My System SpecsSystem Spec


 HDMI wont connect from laptop to home cinema but will connect to TV

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