Why does my PC make a horrible noise on startup after being off overnight? An hour or 2 of being off no horrible noise. I'm pretty sure the noise is coming from
![My new PSU makes this high pitch loud noise. It's Deepcool 850W DQ850-M-V2L. I bought it because my brother has same model, but 750w version. It was great psu for 3 years. My new PSU makes this high pitch loud noise. It's Deepcool 850W DQ850-M-V2L. I bought it because my brother has same model, but 750w version. It was great psu for 3 years.](https://external-preview.redd.it/my-new-psu-makes-this-high-pitch-loud-noise-its-deepcool-v0-Bf-qpkr9662dPwhJueLVgeqQmOoLlaI2tnq1OLtkEuY.png?format=pjpg&auto=webp&s=cea430b24ef3b75787a6971f10320d225135de48)
My new PSU makes this high pitch loud noise. It's Deepcool 850W DQ850-M-V2L. I bought it because my brother has same model, but 750w version. It was great psu for 3 years.
![this power supply makes a horrible high pitch noise when it's plugged in, you can hear it across the room any suggestions on how to fix that? now to be fair i this power supply makes a horrible high pitch noise when it's plugged in, you can hear it across the room any suggestions on how to fix that? now to be fair i](https://i.redd.it/this-power-supply-makes-a-horrible-high-pitch-noise-when-v0-tsjqzscm5ula1.jpg?width=3339&format=pjpg&auto=webp&s=6b09a19e00a1bc6b053513c0f542360f9163b5ab)
this power supply makes a horrible high pitch noise when it's plugged in, you can hear it across the room any suggestions on how to fix that? now to be fair i
![Corsair RM750e (2023) Fully Modular Low-Noise ATX Power Supply - ATX 3.0 & PCIe 5.0 Compliant - 105°C-Rated Capacitors - 80 PLUS Gold Efficiency - Modern Standby Support - Black : Amazon.co.uk: PC & Video Games Corsair RM750e (2023) Fully Modular Low-Noise ATX Power Supply - ATX 3.0 & PCIe 5.0 Compliant - 105°C-Rated Capacitors - 80 PLUS Gold Efficiency - Modern Standby Support - Black : Amazon.co.uk: PC & Video Games](https://m.media-amazon.com/images/I/71XeKGayJaL._AC_UF1000,1000_QL80_.jpg)
Corsair RM750e (2023) Fully Modular Low-Noise ATX Power Supply - ATX 3.0 & PCIe 5.0 Compliant - 105°C-Rated Capacitors - 80 PLUS Gold Efficiency - Modern Standby Support - Black : Amazon.co.uk: PC & Video Games
![this power supply makes a horrible high pitch noise when it's plugged in, you can hear it across the room any suggestions on how to fix that? now to be fair i this power supply makes a horrible high pitch noise when it's plugged in, you can hear it across the room any suggestions on how to fix that? now to be fair i](https://i.redd.it/this-power-supply-makes-a-horrible-high-pitch-noise-when-v0-yfolgm6m5ula1.jpg?width=3024&format=pjpg&auto=webp&s=e1f8da4c4ae16b8d2f80718e6380faf276287764)
this power supply makes a horrible high pitch noise when it's plugged in, you can hear it across the room any suggestions on how to fix that? now to be fair i
![this power supply makes a horrible high pitch noise when it's plugged in, you can hear it across the room any suggestions on how to fix that? now to be fair i this power supply makes a horrible high pitch noise when it's plugged in, you can hear it across the room any suggestions on how to fix that? now to be fair i](https://preview.redd.it/this-power-supply-makes-a-horrible-high-pitch-noise-when-v0-a5e3pjxl5ula1.jpg?width=640&crop=smart&auto=webp&s=34affb8fec1dffbd583eb141703fd00b1753e1f8)
this power supply makes a horrible high pitch noise when it's plugged in, you can hear it across the room any suggestions on how to fix that? now to be fair i
![Amazon.com: ASUS TUF Gaming 1000W Gold (1000 Watt, ATX 3.0 Compatible Fully Modular Power Supply, 80+ Gold Certified, Military-Grade Components, Dual Ball Bearing, Axial-tech Fan, PCB Coating, 10 Year Warranty) : Everything Else Amazon.com: ASUS TUF Gaming 1000W Gold (1000 Watt, ATX 3.0 Compatible Fully Modular Power Supply, 80+ Gold Certified, Military-Grade Components, Dual Ball Bearing, Axial-tech Fan, PCB Coating, 10 Year Warranty) : Everything Else](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/71xR3Be4QyL.jpg)