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#1
Vibration on computer case cover makes humming noise.
My computer case cover vibrates, making humming noise. I know this because if I gently press the computer case cover the humming is significantly reduced. I suspect the culprit may be a new hard drive that I recently installed (Seagate Barracuda 1TB). What puzzles me though is that the pressing place that reduces humming sound is on the other side of cover from where the hard drive is. There's nothing behind the spot, but CPU fan is blowing hot air that direction. GPU is 10cm lower. I don't think the case cover is directly touching any components. Cover model is Antec Sonata III silent atx.
I installed the hard drive on same spot where last hard drive was, with four screws and elastic grommets that are supposed to reduce vibrations. I think the installation itself went fine. Screws are tight and cables seemed reasonably uncrowded. How should I troubleshoot this problem?