Posted March 26 Hi, I just bought new MSI MPG A850G PCIE5 850W and barely installed it. I'm 100% sure that everything is connected well. This click sound happens only when turning on or off PC, and it's just fracture of a second, everything works and sounds normal so IDK if I should be concerned. Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted March 26 That's most likely the sound of a relay turning on/off, and it's completely normal. I have multiple power supplies that make the same noise. Computer engineering grad student, machine learning researcher, and hobbyist embedded systems developer Daily Driver: CPU: Ryzen 7 4800H | GPU: RTX 2060 | RAM: 16GB DDR4 3200MHz C16 Gaming PC: CPU: Ryzen 5 5600X | GPU: EVGA RTX 2080Ti | RAM: 32GB DDR4 3200MHz C16 Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted March 26 The relays that switch the mains power on/off in a PSU are what make that click; different PSUs have relays of varying volume. Laptops for sale: [FS] [US] Vintage laptop collection + parts - Classifieds - Linus Tech Tips Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted March 26 My SF750 has a distinct relay click, I actually like it. Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
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