high pitched rattling noise near cpu area

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Aaron Robinson

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Aug 13, 2013
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I was thinking it's coil whine, so I took the cover off for my pc and I can't pinpoint the noise at the PSU. It's coming from around the cpu/motherboard.

I doubt it's my video card because I turned the fan to 100% and it still didn't make the same high pitched noise.

Also some information you might want to know is that my power supply is only 300w
And I had this pc for 2 years, the only thing that I changed on my pc was I put a graphics card in it, but I didn't hear this noise until 5 months after I had this card put in.

My pc randomly turned off one day, and then after that the noise started coming.
At first the noise only happened when I played certain games, but now it ramped up to where any game I play will cause the noise.
Now it's gotten so bad, that just scroll up and down on the internet causes the noise to come up. When I'm idle I don't hear the noise.

What do I do? I don't have money to throw away to replace every part on my computer.
 
Solution
mauller07
well you basically diagnosed it yourself to moments when you are using more power ie gaming etc and as the supply has degraded more its starting to make noise when your doing less power demanding things.

since it is an old low power psu as soon as you added your graphics card you will have increased the overall power use on the psu and put more strain on it to the point where a component now is beginning to fail, most likely a capacitor whining or the step down transformers whining under the strain.

http://www.amazon.com/gp/product/B0092ML0MY/ref=s9_simh_gw_p147_d0_i1?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-2&pf_rd_r=09EH69TS3SD3JBENDZBF&pf_rd_t=101&pf_rd_p=1389517282&pf_rd_i=507846 this should do fine if your in the us

or similar in...
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Aaron Robinson

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Aug 13, 2013
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Amd phenom II x4 945 processor.

HD amd radeon 6670. graphics card.

So right now there's an answer saying the cpu fan, and another saying the power supply.
I don't have much money on me, so I don't want to replace multiple things to figure this out.
How can I confirm that it's not one of those? I don't hear the noise coming from the power supply, it sounds like it's coming from the cpu.
The noise came last week, and at first it only happened when I was playing certain games, then it changed to where I heard the noise playing every game, then it changed now to where when I am loading up a new web page or scrolling up and down, the rattling noise comes on. (stops when it's idle)

Also if I want to confirm if it's a fan making the noise or not, how do I stop the fan without damaging it while the pc is running? Is it safe to just stick my finger in the cpu and psu fans?
 
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mauller07

mauller07

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Mar 28, 2010
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well you basically diagnosed it yourself to moments when you are using more power ie gaming etc and as the supply has degraded more its starting to make noise when your doing less power demanding things.

since it is an old low power psu as soon as you added your graphics card you will have increased the overall power use on the psu and put more strain on it to the point where a component now is beginning to fail, most likely a capacitor whining or the step down transformers whining under the strain.

http://www.amazon.com/gp/product/B0092ML0MY/ref=s9_simh_gw_p147_d0_i1?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-2&pf_rd_r=09EH69TS3SD3JBENDZBF&pf_rd_t=101&pf_rd_p=1389517282&pf_rd_i=507846 this should do fine if your in the us

or similar in the uk http://www.amazon.co.uk/Corsair-Builder-Series-Bronze-Supply/dp/B009RMP2VE/ref=sr_1_1?ie=UTF8&qid=1376389253&sr=8-1&keywords=corsair+cx500

should last you through anymore upgrade like a more powerfull GPU or you could look for the corsair cx430 which is around 10 pounds or 10-15 dollars cheaper
 
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Solution
A

Aaron Robinson

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Aug 13, 2013
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Thanks a lot, also how will I know if that power supply will fit my case? I am currently using a iso-400 power supply
 
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yoji

yoji

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Jul 1, 2011
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Mauller07 is determined to make the facts fit his theory..
Twice you have said the sound does not seem like it coming from PSU - but he presses on.!!! :??:

But yes.. you can just lightly touch the centre of the fan.. don't push hard enough to stop it.. but even the lightest touch should be enough to stop it rattling... and then you will know.. Obvs.. don't do it for long.. and don't electrocute yourself while fiddling around inside a PC with the power on.

HTH
Cheers
 
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mauller07

mauller07

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Mar 28, 2010
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The noise came last week, and at first it only happened when I was playing certain games, then it changed to where I heard the noise playing every game, then it changed now to where when I am loading up a new web page or scrolling up and down, the rattling noise comes on. (stops when it's idle)

you forgot this tidbit that the noise only occurs when he is doing something on the pc rather than when the pc would be getting hotter for it to be a fan.

try yoji's fan idea anyway just to check.
 
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Aaron Robinson

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Aug 13, 2013
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http://www.ebay.com/itm/ISO-400-Power-Supply-300W-/180430251021
This is the power supply I have, it doesn't say what size this one is though I think.

Also just in case, what should I test on my pc just in case the power supply wasn't the problem?

Edit: Yes it's the power supply that's the problem, thanks guys.
 
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mauller07

mauller07

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it is just a standard ATX power supply so will be a straight out swap.

remove your graphics card and try using jsut the integrated graphics for a moment to reduce the load on the psu and see if it still makes the noise, also try pressing down lightly on the cpu fan like yoji said when its making the noise and see if it goes away.
 
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Aaron Robinson

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Aug 13, 2013
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Pressing on cpu didn't stop the noise, going to order that 500w power supply now.

 
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Aaron Robinson

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Aug 13, 2013
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The noise went away when I removed my graphics card. My resolution is all messed up now lol, my pc can't detect my real resolution (which is 1680x1050) I'm stuck on 1600x1200 for the closest lol.

my card will arrive in 2 days. This resolution is pretty ugly for me to hold out for 2 days D:
 
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