Whenever I turn on my mic on my pc my music sound got a problem on its output? what is the possible cause of this? is it normal? If I mute or turn it off, the sound is good.

Hi FREN!

What is the problem on the output?
Is it a quality problem, or do you have no sound at all?

Blue

yes the problem is the quality.

Hi Fren, it looks like you have an onboard sound card. I've noticed this tends to happen a lot with onboard and knockoff (low end) sound cards pretty frequently. You may consider turning off the mic boost if that's on.

Hi FREN!
Make sure you update (or install the original) drivers for your (on-board) soundcard. Most times problems like this are due to the standard Windows drivers.
The drivers are probably on your mainboard CD, and if not, you will be able to download them from the MSI website. I consider you've got an MSI mainboard, looking at your signature.

Blue

but i alreday installed the right driver for it. but right now i turnoff the mic and it quitly runs ok