ASUS Laptop Noise? Help!

I recently bought an ASUS touch-screen laptop model Q501LA, and I noticed a very light static-like sound coming from the laptop on the lower right corner of the keyboard area. I called ASUS technical support and they told me to bring it back to best buy, so I did. The best buy customer representative said that there might be a defect in the hard-drive, or something like that, so he gave me a new one. However, the new one still has that same noise. So I'm thinking that either this noise is normal or that this model was poorly manufactured or that I'm just extremely unlucky. I've called ASUS many times and they told me to go back to best buy, which I will do first thing tomorrow. So, I was just wondering if you guys could give some input on this issue.

I recorded the noise and uploaded it here (starts around 0:08):
https://www.youtube.com/watch?v=Y4D3q8HBo50

 

Sounds like HDD. I had ASUS laptop and it sounded very similarily...

 

Is that the HDD working properly or badly?

 

For whatever reason, the newer hard drives that I've heard in both the Sager NP7352/Clevo W350ST (with a 750GB HDD 7200RPM) and the Asus N550JV (with a 1TB HDD 5400RPM) display the same noisier hard drive operation where you can actually hear the HDD arm noises.
I don't think they're coincidence, and it just seems like normal operation is noisier on the larger capacity drives of the same 2.5" form factor possibly due to thinner cases and less sound isolation (which results in the sounds being more easily transmitted and heard through the open areas in the laptop case and fan areas).
So I'm assuming working properly.

 

Just not satisfactory.

No, agree, the vibration on some of these cheap disks when they spin up is pretty high in the first place. And the klakk-klakk noises when the drive goes to and from ready-states can be annoying as heck, specially when they're not isolated well. Went ahead and bought a batch of spinpoint m6 drives a while back, just because they were silent - and you could set the drives to lower acoustic noise some minor performance cost. That was all right in a laptop and in a console or a living-room PC. But anything outside of that and it goes on my nerves. So I know what you mean. But it's likely how the drive is. Triple or dual plates with air between, no isolation into the chassis, and you get mechanical whirring and creaking.

And they don't really make low rpm spinpoint drives any more, so.. SSDs are neat, though. 250Gb goes for about the same price now as 40Gb a year ago. And 500Gb-1Tb drives are available.

 

Thanks for your answers! I

 

Also could be CPU whine, which is pretty common. My Sager laptop had that as well as an odd clicking whine sound caused by the LCD inverter or something like it. I certainly wouldn't worry about it if it's present on both the machines you've used.