Acer Aspire causing weird sound through HDMI?

[diadara]

Hi!
I've got an Acer Aspire 5738ZG that I connect to my TV through a fully functional HDMI cable. The problem is that I get a really high pitched noise at certain sound frequencies, it makes my TV speakers sound like their busted. It can be anything from a voice in a dialogue to a bass tone in background music. I should say that I also have a home theater sound system plugged in, but that's not the problem. When I watch regular TV with the sound system, there's nothing wrong with the sound from the TV nor the satellites.
The problem started after I'd formatted my laptop, so I really hope it's a driver issue though I have all the latest revisions.

I've tried:
Different movie players, BS player, VLC and Zoom player
A different HDMI cable
Movies/music from all kinds of sources, DVD/CD aswell as rips
Tried to get answers from five forums, but I've gotten no answers

I hope someone out there can help me with this, I'm desperate. Watching movies isn't fun anymore.
/dia

 

[jarotech]

Hi, did you try connecting the sound directly to your home theatre sound system with the SPDIF connector.

 

[diadara]

Hi, did you try connecting the sound directly to your home theatre sound system with the SPDIF connector.

Hi and thanks for your reply.
Unfortunately, my home theatre sound system is old and does not have such a connector
It's a Panasonic 5:1 bought back in 2003 with a non-detachable DVD player. It's a great system in every way so I have no intentions of replacing it. Never had any problems with it what so ever.
Thanks anyway!