Could my CPU be causing my motherboard to make a buzzing noise?

[Pavel Pokidaylo]

Hello. A while back my PC froze up 10 seconds into running Unigine heaven and would not boot to windows untill we hit the Mobo reset button. After we did that, the PC booted to windows but a whole array of problems began.

My Video card began making a weird noise.
All my fans were spinning too fast and making noise. (Both the Video card and all the fans were dead silent prior to this)
The motherboard was making a buzzing noise and also the power supply was doing the same.

I sent in the board and video card for RMA to MSI. The 780 ti gaming they sent back to me was defective so I sent it back again today.
The motherboard they sent back is doing the exact same things the original one was doing. So either they sent me back the same board or I'm just the unluckiest guy on the face of PC gaming.

Anyway, I'm going to let them charge me 99 bucks and they will send me a different mobo and refund me the money when I send this one back. I don't want to be stuck without my PC for another two weeks.

So, I'm praying that this time they send me a perfectly working video card and mobo. However I'm concerned about the CPU. Is it possible that the CPU is making my Mobo act this way? I know it's a dumb question and the answer is probably no but I want to be sure. I don't want to go through this again.

Thanks

 

[JamesSneed]

I would doubt its the CPU unless its severely over heating but even then I wouldn't expect any of those issues. My only thought is the PSU is defective. Other than that its really hard to say.

 

[Pavel Pokidaylo]

oh sorry forgot to mention I actually put in a new PSU after that happened. Traded my old sapphire 7950 for a seasonic 1050W gold PSU with my computer guy. And thanks I was worried about the CPU

 

[nukemaster]

I am guessing the coil whine was not related to your system issue.

Computers use switching power(because of its high efficiency) and regulators(dc-dc converters). Switching power supplies use capacitors and coils as energy storage devices(so do other power supplies, but they do not operate at these insane frequencies they would operate in the 50 - 120hz area) to greatly reduce the amount of noise/ripple in the output power(too much ripple would cause instability). The coils vibrate at high frequency under certain levels(switching on and off 1000's of times a second does this.). This is the noise you hear.

It is not damaging in any way and can not be heard by some users. Some systems setups reduce or even eliminate most of this noise.

Chances are you just had some bad luck and a component could not handle the strain. Fans running upto full speed can happen when a system hangs and the hardware no longer can control the fan speeds so they take the safe FULL speed.

One reason you may have the noise in the power supply as well is because this switching action tends to pull power in pulses at the switching frequency. Some power supply makers had been placing "large"(large for most switching supplies) 2200uf capacitors right on the pci-e cables to reduce or even remove this noise.

I never did get to test this but can confirm that I have owned boards and video cards that had coil buzz or coil whine as some users call it. It has never caused any issues over years of use aside from the annoying sound.

 

[Pavel Pokidaylo]

The noise coming from the mobo does not bother me. As long as I know it's safe and won't damage my hardware I don't really care because I can't hear it unless I put my ear to it. However, the fans should not be spinning this fast. They were dead silent before and now making noise because of how fast they are spinning. The video card noise was very annoying too.

My mobo is the G45 from MSI. I'm going to be getting another one from their RMA and hopefully this one will be able to control the fans =/

I'm also considering just buying an Asus board instead. I don't want this to happen ever again. It's been a huge pain in the neck for me.