Serious sound problem

In a way this could apply to you.
It's most likely your sound card, it need new drivers, the only other possibility would be the codecs.
That's all that I can think of at this time.
If this doesn't work, come on back and lets see what else we can do.
Also has it ale ways done this or did it just start.

http://support.microsoft.com/default.aspx?scid=kb;en-us;177252

http://support.microsoft.com/default.aspx?scid=kb;en-us;291818 For XP only.

Also do you have the latest DirectX installed, you should.

I reinstalled my soundcard drivers and it helped for a couple of flight sessions, but then the same problem came again and it is now just like before reinstalling. I have newest drivers.

Try going into the sound settings in the sim and set your specs to the lowest setting.
MS has a bad habit of not supporting certain versions of cards, new ones, way out of date ones and odd ones.
I don't think yours fall into these categories but I would try to "dampen" its presence in the sim.
See if the card has a configurable control panel, it may be listed in your programs listing. A change of some kind there might be the answer.

Dump the sound card. Buy yourself a Creative labs sound Blaster 2z (thx certified for your future games or movies) About $99 US. Disable the onboard sound (motherboard) and follow instructions in installing your new sound card. You wont be dissapointed.

I had the same problem with the onboard sound and a SIS sound card, about 10 minutes into the game, it will either screetch or chatter.

Good luck

It helped when I changed soundcard's settings 😀 Maybe I should buy new soundcard anyway.

If you do buy a Creative make certain that you delete the old drivers before you put the new card in.
Shut off the computer, pull out the old card, put in the new card and boot-up the computer.
Windows will recognize it. then install the new drivers that you get with the card.