What is the noise my pc makes randomly and before turning off?

Oakley999 · Mar 6, 2015

Randomly and just before my pc turns off in the logging off screen I hear a shKK sound, its not too loud but I think it might be the power supply considering it makes the sound when i turn off my pc. Is this sound indicative of something?

boosted1g · Mar 6, 2015

Would need to hear it, how old is the power supply, the hard drives and the fans?

Everything is powered by the power supply, so a fan stopping or hard drive stopping and making a noise would be because you turned the power off.

MasterDell · Mar 6, 2015

PSU make and model please.

giantbucket · Mar 6, 2015

hard drive heads parking?

Oakley999 · Mar 7, 2015

My psu is a corsair Cx750. And sorry for the vague explanation of a sound, its more of a variation of a click, it happens every time i turn off my pc, always has, not a big problem really, but it also does it randomly even when im on the desktop, my hard drives are always running even when not used, so im not too sure.

giantbucket · Mar 7, 2015

well, your hard drives won't be running when you turn off the machine, so it might be them. if you can, take the side cover off the machine, and put your fingers on the drive and power supply, and try to feel what is making the tick when you power down.

MasterDell · Mar 7, 2015

giantbucket :

Yes definitely try this. Might now work so well for the PSU because it is a lot bigger, therefore the energy from the click will be dispersed better. But it is definitely worth a shot.

Oakley999 · Mar 8, 2015

It sounds like its coming from either my psu or my gpu, (i have 2 gpus.) Im not really too sure why or what this sound means.

https://soundcloud.com/oakley999/sound heres the sound, skip to about 0:28. it comes from the bottom left of my case, where the psu is, plus it makes sounds like that constantly, but very quietly.

Oakley999 · Mar 8, 2015

Alright, It seems theres a problem with the cx750.

http://forum.corsair.com/forums/showthread.php?p=626750 Forum thread and also a youtube video of the "quieter" noise i was on about.

http://www.youtube.com/watch?v=5Udbi8QexKM

MasterDell · Mar 8, 2015

Oakley999 :

Figures. This is Tom's Hardware members are always suggesting members to avoid Corsair PSUs.

Oakley999 · Mar 8, 2015

MasterDell :

How? this is the one i have now and it has this problem, loads of people have reported this and loads of people know that corsair make terrible psu's. I only have this one because i bought this one custom made nearly 2 years ago.

MasterDell · Mar 8, 2015

Oakley999 :

MasterDell :

How? this is the one i have now and it has this problem, loads of people have reported this and loads of people know that corsair make terrible psu's. I only have this one because i bought this one custom made nearly 2 years ago.

Wait what do you mean how?

giantbucket · Mar 8, 2015

it may be a batch or random case. i have two CX-M supplies and both are great - silent, stable, etc. both are running 24/7 though not at full load. i've had an antec which blew within a week and the replacement has been fine for 7 years, half of that time being run 24/7. i've also had an apevia "comes with chassis" psu that was iffy at first, got replaced under warranty, and replacement has been fine for just as long.

CX might not be "leet haxor gamer approved" but they're not necessarily "all garbage"

MasterDell · Mar 8, 2015

giantbucket :

Why pay $90 for a PSU which isn't as good as one that is $80 and better quality?

http://pcpartpicker.com/part/evga-power-supply-110b20750vr
http://pcpartpicker.com/part/corsair-power-supply-cx750m

$90: http://www.hardocp.com/article/2015/01/21/corsair_cx750_750w_power_supply_review/9#.VP0OH-FNNQI

$80: http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story6&reid=393

Hence the name garbage.

Oakley999 · Mar 9, 2015

I guess i'll just take the pc back then when I can, is this just noise related? or could it have a chance of blowing up or something? lol.

MasterDell · Mar 9, 2015

No chance of blowing up or somethimg.. If it was a LOgysis or something I would be saying different though.

https://www.youtube.com/watch?v=Ezk9OA7aKOE

Oakley999 · Mar 10, 2015

In all seriousness though please, the buzzing gets louder and seems to get bad coil whine when playing intensive games, will I still be able to play games?

MasterDell · Mar 10, 2015

Oakley999 :

Would be too much $ for you to replace it with an EVGA B2?

Oakley999 · Mar 10, 2015

MasterDell :

Warranty doesn't cover changing parts, I wouldn't know where to start anyway.

giantbucket · Mar 10, 2015

if this was a pre-built or custom-built, then yeah taking it back would be the best place to start. at the very least, they'd replace the power supply with a same unit. if they're cool, they'll do it on the spot rather than hold your machine hostage for N weeks while sending just the power supply back to corsair.

optionally, ask them if they can "upgrade" you to another brand/model for a small charge.

Oakley999 · Mar 10, 2015

They collect the PC and deliver it back 3-5 days later which is quite good. Hopefully they get me a better PSU, they would probably test it before sending it back to me anyway. Because its 3-5 days they probably already have parts there. The business is called chillblast and they are probably 150 miles away from me.

Oakley999 · Mar 10, 2015

The bottom gpu of my sli (2 of them) is quite close to the psu, my gpu wouldnt make that sound would it? here it is again from earlier which i posted. https://soundcloud.com/oakley999/sound

Sometimes, I hear the sound, then the same sound with maybe a slightly different pitch etc half a second after, surely this cant be the gpu fan because it isnt constant?

MasterDell · Mar 10, 2015

Oakley999 :

Does it happen when you are playing non-intensive games?

Oakley999 · Mar 10, 2015

MasterDell :

No. The recorded sound at random intervals, but the sound seems to be coil whine mixed with a bad PSU, even though its under 100fps, such as cs go.

MasterDell · Mar 10, 2015

Oakley999 :

MasterDell :

No. The recorded sound at random intervals, but the sound seems to be coil whine mixed with a bad PSU, even though its under 100fps, such as cs go.

Hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm. Ship it back and tell them to fix it.. Not acceptable that this happens.

What is the noise my pc makes randomly and before turning off?

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