Problem connecting PC to TV (Inc Video)

[Brydo666]

When I built up my new gaming rig I decided I'd also install XBMC and connect to my TV.

My system is running Windows 7 SP1 X64 and I've got an nVidia GeForce 460GTX 1GB.
The card has two DVI's and a Mini-HDMI.
My TV is a Samsung LE40C530.
If I connect my laptop HDMI-HDMI to the TV on either 3 HDMI ports, it works fine.
I bought a 10m Mini-HDMI to HDMI cable and ran the cable from my PC at one side of the room to the TV on the other.

What happens, is if I connect the HDMI to HDMI1 or HDMI3 the TV says "No signal" when the relevant input is selected... however if I disconnect the HDMI cable from the TV it states "Check connection".

If I connect the cable to HDMI2 it works, but flicks on and off without me doing anything. Have a look at the video I made below;

http://www.youtube.com/watch?v=It3DE1zTGGk

Note that when the video was running, there was no action on the keyboard/mouse and the cables connected didn't move in the slightest.

Does anyone have any idea what is going on? I've listed a URL to the cable below.

http://www.amazon.co.uk/gp/product/B003F0Q3BM/ref=oss_product

Any help appreciated?

[liveseytowers]

What resolution is it set too? Try it at a lower res? Also I think one hdmi port will be just for pcs mine has one that only a pc works on. I had to set the screen size from auto to fit screen as well. A few things to check for you

[Brydo666]

Good call!

It works flawlessly at 1280x720! The system automatically switches Audio to the TV also which is a bonus.

Bit confused as to why it won't work at 1920x1080 though... I wonder if the cable is too long?

[liveseytowers]

Did you try it on 1080p with it set to fit to screen instead of 16:9?

[pctuner1984]

Just a guess but maybe signal degradation, a friend of my had similar issue and it was down to cable length and quality of cable

[Brydo666]

Did you try it on 1080p with it set to fit to screen instead of 16:9?

Yeah, most of the time the signal isn't displaying on the TV at all.

Just a guess but maybe signal degradation, a friend of my had similar issue and it was down to cable length and quality of cable

I think this is exactly the issue... long cable at a cheap price. I may live with it at 720p!

[pctuner1984]

Shame that hate problems like that, pitty you can't order a qed cable online test it and then return it lol