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PSU making electrical buzz

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Posted · Original PosterOP



my psu CX 750M makes electrical buzz. System randomly  freezes for a second when the buzz stops for a second, and then runs as usual. 

Hope someone would be kind enough to solve this. 

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Are you sure it isn't coil whine?

My Rig: 

CPU: Intel i5 2400 4 Cores, 4 Threads @3.4GHZ ( Turbo ) 

MOBO: Dell 980 1155 Motherboard

RAM: 2x4 DDR3 1333mhz generic ram

GPU: GTX 1060 3GB Zotac Mini 150+ core, 500+ mem ( OC ) 

HDD: 250gb Kingston A400 SSD + 1tb 7200rpm Hitachi HDD

CASE: Rosewill FBM-X1 Case

OS: Windows 10 64-bit / Blackarch Linux

PERIPHERALS: Corsair K55 RGB Keyboard, Logitech G Pro Mouse


Personal Email Client, NAS, Website Hoster, and Game Server: 

CPU: Intel Xeon X5647 4 Cores, 8 Threads @2.93GHZ

MOBO: Dell Precision T3500 LGA 1366

RAM: 2x16 32GB 1066MHZ (PC3-8500) generic ram

GPU: Radeon HD 7670  65+ core 65+ mem ( OC ) 

HDD: 3TB Hitachi 7200rpm, 250gb Kingston A400 SSD 

PSU: Corsair TX750m semi-modular 80+ gold 750w

CASE: ( Literally no case, just sat on top of a cardboard box ) 

OS: Windows 7 64-bit / Ubuntu Server 18.04.2 LTS

PERIPHERALS: Dell L100 Keyboard, Logitech G300s Mouse


Laptop: Dell Precision M6300

CPU: Intel Core 2 Duo T9500 2 Cores, 2 Threads @2.6GHZ

RAM: 4GB DDR2 800mhz sodimm 

GPU: Quadro FX3600M 512mb vram

HDD: 320GB 7200rpm hard drive 2.5"

SCREEN: Glossy 16:9 1920x1200

OS: Windows 7 64-bit

PERIPHERALSLogitech M705 Marathon

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Sounds like Coilwhine.


Not a lot you can do. And the CXM (2015) is known to be a PSU prone to whining

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