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Pahddy

Is this a PSU fault or Mobo fault?

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Posted · Original PosterOP

Today I started my PC as normal. I noticed after start up that there was some stuttering and a buzzing sound every 5-6 seconds that lasted for around 1 second each. I have a P8Z77-V LX2 and a crappy CiT 750w PSU (that I am hoping to replace soon). I could get a video when it happens next if you want.It is not the CPU because I got a 3570k today to replace my G2020 and the fault carried over! Thanks!

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Well I would say replace the PSU with something better, and if the issues go away, then yeah the crappy power supply was the issue. If the voltage coming out of the power supply has some ripple in it, or is out of spec, then it can cause instability in your system.


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Posted · Original PosterOP

Well I would say replace the PSU with something better, and if the issues go away, then yeah the crappy power supply was the issue. If the voltage coming out of the power supply has some ripple in it, or is out of spec, then it can cause instability in your system.

I'm hoping to get a new PSU maybe tomorrow. The +12 voltage on this one has never been quite right, dipping down to 11.808v today I seen.
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By "buzzing", do you mean coil whine or a low buzz? First check that no fans are hitting cables or the source to the sound (the bearings can make a buzzing sound when old and dry) by unplugging the fans. If it persists after that, try find where the sound originates from. If it is from the PSU, then it's most likely that. If not, then keep trying to track down where the sound comes from.


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Posted · Original PosterOP

By "buzzing", do you mean coil whine or a low buzz? First check that no fans are hitting cables or the source to the sound (the bearings can make a buzzing sound when old and dry) by unplugging the fans. If it persists after that, try find where the sound originates from. If it is from the PSU, then it's most likely that. If not, then keep trying to track down where the sound comes from.

It is coming through the sound card, nothing physical found.
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I'm hoping to get a new PSU maybe tomorrow. The +12 voltage on this one has never been quite right, dipping down to 11.808v today I seen.

That's not too bad really. I'm more concerned about the stuttering that you mentioned than the buzzing.

[Desktop][i7 3960X @ 4.3Ghz][P9X79 Deluxe][16GB DDR3 1866Mhz][GTX 1080Ti Fe][1TB 850 Evo][Win 10 Pro]
[Laptop][Pavilion Gaming 15t][i7 8750H @ -128 undervolt][8GB DDR4 2666M Mhz][GTX 1060 Max-Q][1TB WD Blue 3D Nand SSD][Win 10 Pro]

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Posted · Original PosterOP

That's not too bad really. I'm more concerned about the stuttering that you mentioned than the buzzing.

They are linked. They only happen with each other. Not right on start up but during operation (around 10 mins after). My mouse is OK. I have scanned for Viruses and Malware but nothing worth noting found
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They are linked. They only happen with each other. Not right on start up but during operation (around 10 mins after). My mouse is OK. I have scanned for Viruses and Malware but nothing worth noting found

Well it's definitely good that you checked those things in advance. I'd just replace that power supply then.

[Desktop][i7 3960X @ 4.3Ghz][P9X79 Deluxe][16GB DDR3 1866Mhz][GTX 1080Ti Fe][1TB 850 Evo][Win 10 Pro]
[Laptop][Pavilion Gaming 15t][i7 8750H @ -128 undervolt][8GB DDR4 2666M Mhz][GTX 1060 Max-Q][1TB WD Blue 3D Nand SSD][Win 10 Pro]

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Posted · Original PosterOP

Well it's definitely good that you checked those things in advance. I'd just replace that power supply then.

OK. Will do tomorrow then (if its still in the shop) with a Corsair Builder series 600w. This has been an ongoing problem but today it has been constant.
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OK. Will do tomorrow then (if its still in the shop) with a Corsair Builder series 600w. This has been an ongoing problem but today it has been constant.

That will be a much better PSU than the one you've got now.

[Desktop][i7 3960X @ 4.3Ghz][P9X79 Deluxe][16GB DDR3 1866Mhz][GTX 1080Ti Fe][1TB 850 Evo][Win 10 Pro]
[Laptop][Pavilion Gaming 15t][i7 8750H @ -128 undervolt][8GB DDR4 2666M Mhz][GTX 1060 Max-Q][1TB WD Blue 3D Nand SSD][Win 10 Pro]

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