speaker squeaks and squaks...

soundcard is realtek ac97. periodic squeaking and squaking occurs only when using msn video call. when playing sound files, it's flawless. using philips mm5321 80 watt speakers. i updated the realtek drivers today, no change. i thought speaker power supply was too close to cpu. moved it, no chnage. anyone have any ideas on why this would be occurring? any help would be greatly appreciated. (new to computing and to forums)

 

Just a guess, but maybe your mic is causing the feedback. Move the mic wires or re-route them away from the speakers and speaker wires. See if that helps.

 

thanks to Kestrel13! and musksnipe for your suggestions. i'm oncall 24/7 in medical field so i haven't had a chance to try the things you mentioned but will as soon as i can get some downtime from work. i appreciate your quick responses.