weird sound new pc build

imported_xeno

Senior member
Jun 1, 2005
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just got my parts today
e6850
crucial ballistix pc6400 2gbs
evga 8800gt superclocked
asus p5k-e wifi
500gb western digital sata2
samsung sata dvd burner

my new rig is up and running but i am hearing a weird hissing sound
when i tried to figure out what it is , the only thing i can hear the noise comming from is the hardrive

could it be faulty hardrive?