Arma causing sound problems outisde of the game?

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Myself and another person I know are having problems since installing the US Demo.

For me, my microphone will magically stop transmitting. I can hear it on playback, but it will not transmit in voice comms and it will not record into things like sound recorder. I can reboot and not launch Arma, but the problem will still present itself. This did not happen until I installed Arma. I am using the RealTek onboard 7.1 High Definition soundcard.

The other person has lost his ability to adjust his soundcard settings for other games. It comes up and says "no audio device found" He is using an Audigy 2 ZS.

[biggibs 0]

I've had similar problems with sound.

When i try and use Teamspeak all is ok while on my desktop but as soon as i launch arma my mic gets disabled,can't transmit or hear others in ts.

the transmit light dosn't light up in ts and even if i exit arma i have to run the voice/test hardware app

in control panel to get mic working again...all other games i play and use ts with are fine,never had this sort of problem before.

Btw im also using a AC97 onboard soundcard.

using the ac97 mainly because i can use the frontpanel audio,as my creative SB didn't have that option

plus 'windowz' doesn't seem to dectect my SB at all anymore