iTunes cannot run because it has detected a problem with the audio config.

I didn't make any audio changes, but since I startet up my laptop the last time there occures allways a warning pop up when I'm trying to open iTunes. The pop up contains the following message: "iTunes cannot run because it has detected a problem with your audio configuration".
And there is just the possibility to click the "close" button on the pop up.
So now uninstalled and re-installed the newest version of iTunes, but this didn't solve the problem. I allso searched through the audio settings in the control panel area. But I dind't find any false settings, or maybe I just don't know where the problem is.
Does someone know what the problem could be. Or did someone have similar problems and found a way tosolve it?
Could it be possible that another audio program such as winamp media player creates a problem for the startup of iTunes?
Thanxx a lot for any helpfull replies, cheers sal