PSU failure or something else?

Kurumii

Junior Member
Nov 15, 2016
3
0
6
Hello,

My system specs are:
- Asus Maximus VI Formula
- Corsair AX 1200
- Corsair Vengeance 4x4 (16gb)
-Msi gtx 970
-Noctua u14s
-2 SSD // 3 HDD
-Windows 7

About 1-2 months ago I was hearing a buzzling sound and whole pc case was vibrating really like a mobile phone.
I thought it was the HDD cage so I replaced my Corsair 750D with a Fractal Design Define R5.
Since then pc boots normally but with no "beep sound" and I think this happened in the past but did not pay too much attention to it.

The more weird thing is that when I shut down pc it stops giving signal to monitor but pc continues working, fans psu motherboard everything working like it never closed. This happens about 2 out of 10 shutdowns not always.

One more thing is that HDD's were dissapearring from My Computer sometimes ive yet to see it for 1 day though so this may be fixed can't tell for sure.

2 days ago when I came back from work and pc was turned off, it tried to boot for 3 seconds shutdown and retried the same endlessly. I removed 3 dimms of ram and HDD's and booted normally. then tried again nothing, This was fixed as I figured out 2 sticks of ram were back to 1333mhz while the other 2 stayed in 1600mhz where they always were. I did apply 1600 for the other 2 dimms of ram and worked, but 2 out of 4 dimms of ram downgrading on their own is not normal at all.

The "no beep" sound as well as not shutting down normally sometimes continued so I did a reset bios settings (bios using the latest filmware 1603 // 8-15-2014) the buzzling sound was back again from psu most likely.I should note I just put cpu fan to silent 400rpm and rams in their 1600mhz again later.

In a system that needs like 500watt max a 1200 psu should not have fan working at all right? its the only thing I can hear out of whole pc.

Since too many things happened I can not exclude something but everything seems like pointing out psu in my belief at least, I dont want to blindly change it to find something else is wrong just like I did with my pc case, so I would like to confirm it somehow..

If I think of it way back I remember a noise on my silverstone tj07 (the case I was using before 750D) with fully custom watercooling but I had the imagination it was the d5 pump so I got rid of watercooling back then.

The pitching sound (not as audible as in the 2 previous cases after 5 days of using the Fractal R5 noise dampening case) is still here just restricted, so is the shutdown problem as well as the "no beep on startup".

Give me some advice please, could it be PSU? Motherboard? RAM? Anything at all?
Im more worried that if something dies on me, can it take other components with it as well?
 
Last edited:

Rifter

Lifer
Oct 9, 1999
11,522
751
126
sounds like a PSU or Mobo issue to me. Could also be a short somewhere make sure nothing is touching the mobo and shorting it to the case anywhere.
 

UsandThem

Elite Member
May 4, 2000
16,068
7,380
146
Remove the video card, and see if it boots. If not, like Rifter suggested it is likely the PSU or motherboard.
 

Kurumii

Junior Member
Nov 15, 2016
3
0
6
Nothing is touching ther mobo, this is my 3rd pc case i hear this and i had someone build it for me before as well. video card is safe.
The psu pitching noise comes in a cold boot and gets worse as its working even with no load.
in bios i see these : 12.192v , 5.040v , 3.360v.

Edit: noticed pc does not shut down only when hdd's are dissapearing from my computer.
Edit 2: 4 out of 4 times HDD's dissapeared when i opened speedfan ..

So the only thing remaining is the pitching noise out of psu , this is a crappy fan problem tho,
is BE QUIET! STRAIGHT POWER 10 600W a decent recomendation for my system?
 
Last edited:

UsandThem

Elite Member
May 4, 2000
16,068
7,380
146
is BE QUIET! STRAIGHT POWER 10 600W a decent recomendation for my system?

600w is plenty for your hardware.

From the reviews, that unit gets good reviews for quality, but gets dinged on its high price. Depending on what you are paying for it, the EVGA Supernova G2, Corsair RMx, and several Seasonic units are very good choices as well.
 

Kurumii

Junior Member
Nov 15, 2016
3
0
6
Coming from a changed corsair 750D,changing the ax1200 and thinking about changing the corsair vengeance i dont want corsair for now.
Seasonics are not available in my country and overpriced.
I was one step before buying EVGA Supernova G2, but i saw its the only unit out of every psu i checked that its negatives on amazon are burned drives and hardware, there was also a pwm_ok issue i read somewhere.

So i was left with bequiet or coolermaster. The thing that bequiet won me is the guaranteed no coil whine with a silent wings fan. I thought it was lower quality since its not from a known manufacturer, but since you say its good quality its one more reason for me :)