Please make it STOP!

[Mystic_virgo67]

I have recently purchased an Hp Pavillion p6102f with the AMD Phenom II X4 925 2.8GHz processor. Since the day I purchased it, I have been tormented by a high frequency whistle/whine almost exactly like a mosquito whine. At first I thought it may have been one of the cooling fans..GPU, PSU CPU and did a 'finger stop' on each one in turn. Noise still there. Tried disconnecting the HDD by unpluging the power cable. The noise became quiter and more intermittant, but still there. I have contacted HP's customer no-service by phone and support forum and even called a few local repair shops, but HP says there is no problem and the repair techs say that they didn't hear the noise or they refunded the bench fee (imagine that) with defeated looks in thier eyes. This noise is driving me insane! Help me make it stop! Or at least understand why.

IF this isn't posted in exactly the right catagory.. I fit best as I could

 

[ohiou_grad_06]

Power supply could be dying on you. Notice you said you unplugged the hard drive and the noise lessened. Try unplugging the hard drive and optical drive, see if it gets to be even less. That's what I'm guessing is that you may have a power supply dying. If that's the case, you need to get that replaced right away as when power supplies go, they can potentially fry other components like a motherboard or cpu.

What are the full system specs and the rating of the power supply?

 

[Mystic_virgo67]

Base processor
Phenom II X4-925 (D) 2.8 GHz (95W)
4000 MHz HyperTransport 3.0
Socket AM3
Chipset
GeForce 9100
Motherboard
Manufacturer: Pegatron
Motherboard Name: M2N78-LA
HP/Compaq motherboard name: Violet-GL8E
Power supply
300W
Memory
Component Attributes
Memory Installed 8 GB

Hard drive
750 GB SATA 3G (3.0 Gb/sec) Western Digital I think
7200 rpm

Modem
PCIe internal modem
Video Graphics
Radeon HD4650
1 GB memory
I/O Ports: HDMI, VGA, DVI-I (dual-link and single-link)
Sound/Audio
High Definition 8-channel audio
ALC 888S chipset
Network (LAN)
Integrated 10/100 Base-T networking interface
Memory card reader

Is this what you need?

 

[Mystic_virgo67]

the sound seems to lessen the harder I work the computer Like running multiple youtube videos in multiple Internet Explorer tabs

 

[ohiou_grad_06]

Hm. Yeah, like I said, I can't be sure, but my guess is that you may be looking at a power supply issue, because like you said, it fluctuates with the load you put on the machine, and you said it lessened when you disconnected your hard drive. I may be wrong, but if it were me, without looking at it, I'd probably start at the power supply.

 

[505090]

if all the fans have been checked then it is most likely the psu

 

[ohiou_grad_06]

If you don't have the slimline model, and if it can use a standard ATX power supply, this supply is decent and should be good for a budget.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139008

But check with HP to see if it accepts a standard ATX power supply.

 

[4745454b]

Any chance you were using a battery backup? I've heard of them causing a whine with some PSUs.

 

[rand_79]

Usually its the power supply. Try another one and see if the noise goes away.

If not you are going to need to try and pinpoint where the sound is coming from
does it make it when you first turn on the computer?

 

[Mystic_virgo67]

Thanks guys, since I have only had it a week or so, I think it would be easier to get it exchanged.

 

[nforce4max]

It is coil squeal and it is coming from either the psu or the mainboard. In this case it is most likely the board and in that case it needs to be replaced.