Bad Sound in Windows 7 (32 bit) with bootcamp 3.1 on iMac 8,1

I have the following sound issues in windows 7:
I have a strange noise in the background of the sound. On low volume it is more notice able then on high volume. The noise seems to come from the left side only, when i mute the left side the sound seems to be ok.
When i mute the sound (both sides), there came still hearable output from my imac. It seems to come only or more from the right side.
The headphone jack is not working. The system detects the plug in of the headphone, but that's all. The sound come still from the internal speakers.
I try the following things to fix it:
I installed the newest realtek sound driver. It make no difference.
I deactivated wlan and bluetooth to check for interference and conflict problems. It had no effect.
I try different settings in realtek sound manager and windows sound mixer. The only setting that helped was muting the left side. Not really a solution...
In snowleopard everything works fine.
Perhaps anybody can help me.
And sorry for my bad english.
Greetings
Andreas

Hello BennB,
Have you checked compatibility?
Just an FYI for you.
It is always best to check with the software manufacturer FIRST. They will tell you if they have tested the product and the version, as well as whether or not it will work with Windows 7.
Check out the Windows 7 Compatibility site: (There you will find out about hardware and software compatibilty.)
http://www.microsoft.com/windows/compatibility/en-us/default.aspx
There is a pulldown from which you can choose "hardware" and "software".
There are also some great articles, instructional videos and such to help with your Windows 7 at our Springboard site:
http://technet.microsoft.com/en-us/windows/default.aspx
In any event a lot of the times, Vista drivers will work in lieu of Windows 7 drivers, however, it's not 100%!
As stated previously, it's best to have the Windows 7 certified drivers installed.
Microsoft does have an official Windows 7 Support Forum located here http://tinyurl.com/9fhdl5 . It is supported by product specialists as well as engineers and support teams. You may want to check the threads available there for additional assitance and support.
Thanks again,
John M.
Microsoft Windows Client Support

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