Halp! my speakers makes buzzing noises!

[BoomBoomPow]

help pls! my speakers sometimes makes buzzing noises and then it shuts off. as in no sound but the power is still on. usually happen when a sound is playing, like games and youtube vids. sometimes when i watch youtube vids. it makes buzzing noises then i close the browser and the sound returns.. and when its 'off' i cant play my itunes music either and other videos too like anime.. it just stops. like itunes show the song 0:00 and it nvr moves please help=( oh and i have another problem too.. when i start up, sometimes it says that /WINDOWS/SYSTEM32/CONFIQ/SYSTEM( or sumthin) is missing or corrupt. u can atempt to repair blablabla. and i dun have the disc either. i dun remember deleting anything like that. i din delete anything major recently. do u tink it is related to the buzzing noises?

[Aegis]

Details, details, details.

Is this for a desktop or laptop computer?

What kind of computer?  Brand, model, etc.?

What operating system?

Do you know what kind of sound hardware you have in the system?

Yes, we tink it's all related.