Unexplained hum from PC

[Temuka]

Hi all,I have some kind of strange problem here. There is some strong hum noise coming from pc case  for like 10 seconds,than silence for 5 seconds and than again 10 seconds hum. I turned off all the fans with the fan controller and I don't understand what it can be ? thanks in advance.

[A Silver]

CPU fan? GPU fan? Hard Drive? PSU fan?

[MrDrWho13]

Most likely PSU fan

[Temuka]

Just now, A Silver said:

CPU fan? GPU fan? Hard Drive? PSU fan?

I turned off CPU fan,all 3 fans on GPU are turnedd off when there is no load. I have ssd and 2 hdd-s,PSU is EVGA SuperNOVA G2 on silent profile

[A Silver]

Check the HDD usage when it happens in task manager

[pxnguinPr3]

In that case, its either

A) Not a hum, infact a noise made from either the motherboard buzzer or electricity.

B) Made by your PSU fan

or

C) Theres a cat hidden under your desk going mmmmmm, taking 5 seconds to breathe.

[Temuka]

5 minutes ago, A Silver said:

Check the HDD usage when it happens in task manager

It is 1% only

 

4 minutes ago, pxnguinPr3 said:

In that case, its either

A) Not a hum, infact a noise made from either the motherboard buzzer or electricity.

B) Made by your PSU fan

or

C) Theres a cat hidden under your desk going mmmmmm, taking 5 seconds to breathe.

I don't have cat And PSU fan is also kinda dead silent all the time,it's more like noise coming from buzzing of some component or something like that,how can I fix this problem? ...

[pxnguinPr3]

Well you need to find out which one it is. I recomend you [as safely as possible]

Listen to find out where its coming from, which component, then which part on that component.

[ZestyJalapeno]

If you turn off all moving parts and it still happens, then the issue is probably coil whine 

[Temuka]

5 minutes ago, Dogeystyle said:

If you turn off all moving parts and it still happens, then the issue is probably coil whine 

It's not coil whine or some high pitched noise,it's like you hear transistor working from a long distance (but noise goes and comes back under no load)

[Temuka]

Comes out it was my 8 year old hdd As soon I tested without it,the sound was gone... In SpeedFan it says it has:

1) High Fly Writes attribute current value (1) is below the normal range (72 - 100)
2) hard disk has 165 reallocated sectors

Also it was making some weird noises during operation and turning pc on/off

I guess I have to say goodbye to old friend or is there anything can be done ?

It's not coil whine or some high pitched noise,it's like you hear transistor working from a long distance (but noise goes and comes back under no load)

[The_Grim_Reaper]

On 11/2/2017 at 1:35 AM, pxnguinPr3 said:

In that case, its either

A) Not a hum, infact a noise made from either the motherboard buzzer or electricity.

B) Made by your PSU fan

or

C) Theres a cat hidden under your desk going mmmmmm, taking 5 seconds to breathe.

@pxnguinPr3 Or it could be Ross Geller.

[The_Grim_Reaper]

@Temuka

I'm afraid you might have to say goodbye to your old friend.