PC generates a buzzing or electrical sound?
PC generates a buzzing or electrical sound?
The issue began about two weeks ago when everything worked well for the first week, except for the loud fans. After returning home on Friday, I turned on my PC and immediately noticed a persistent buzzing sound. Upon inspecting, I found two possible causes: one was the power supply unit producing a fan-like noise, and the other was the motherboard generating electrical sounds that intensified during gameplay. The motherboard noise would occasionally cease when playing games but returned randomly, which worried me. The PSU, however, kept making a constant buzzing that persisted. I’m worried this might indicate a problem with my PC and would appreciate any guidance on what these noises could mean and how to resolve them.
I'm checking for a better option nearby, perhaps at your power supply. Do you have another reliable one available for testing? You may keep the original in place while using a separate test unit outside the case.
In general, many power supplies that switch between AC and DC often produce unusual noises during operation. This could be due to design choices, component quality, size, or load conditions. It might indicate lower quality and efficiency, or possibly higher efficiency with features like power factor correction circuits. The MOBO sound is likely just coil whine, considering the complexity and power involved. My 4080 Super sometimes makes noticeable coil whine in various situations. Buzzing is acceptable, but if it sounds like "electricity," it’s worth paying attention to.