Windows 7 Laptop audio connection to projector

[StanH]

The sound from external speakers is muffled unless I pull the connecting-wire plug halfway out of the laptop's audio port. But when I do that the cable doesn't stay in place unless I hold it.

What explains this? What is the fix?


Details:

I have a Dell Studio 15, with Windows 7 64bit, video card=512mb ATI HD 4570, sound=High Definition Audio 2.0.

I run video & audio out to a ceiling-mounted projector & speakers with a cable that goes from the laptop into the wall. The laptop has two outputs marked with headphone symbols that seem to be the same.

 

[Saltgrass]

Laptops normally have one headset and one microphone port. If you have enhanced audio, possibly the ports are not actually as marked but have different options.

If you pull a stereo plug part way out, you are probably only running one channel.

Does it work normally if a headset it plugged in?

If it plugs into the wall, have you checked your wiring from the wall to the projector?