computer makes high pitched noise when turned on

With Corsair using good manufacturers such as Seasonic and CWT to build their PSU's I'd be surprised unless it's very old and been loaded near to it's current capacity for it's life time, that it is a faulty capacitor issue. Occasionally on old electronics it can be an indicator that a capacitor has started changing value (ie on it's way to become faulty). Most of the time this is caused by a poorly chosen ground for a piece of equipment. Alternator whine will be heard as a high pitched whine that will rise and fall with the engine speed. When the right circumstances are met by the slightest change in loading through these components they may start to ring/resonate - sometimes you can hear it, sometimes you can't.Īs I said above, I've experienced this on TV, Video, Hifi, Pc Components probably hundreds of times. Similarly, you may ask, why do my car speakers make a high pitched noise Alternator whine is the granddaddy of car stereo noise.The most common and the most annoying. It usually happens when a transformer has slightly loose windings or a Choke has been wound loosely and/or it hasn't been 'locked' with hot glue or varnish. If you want to learn more:- Google/Bing about noisy transformer windings or chokes. The PSU will have these components aswell as the Motherboard and Graphics card having Chokes in their power circuitry. It will be a Choke or Transformer 'ringing' on it's core due to the change in current loading. As I said above, I've seen this behavoir in all sorts of electronics since the 1970's when i started my career (yes I am old). If you sit the suggested 3-4ft away from the monitor you will barely notice it. Also the backlight bleed is much much less then what i have been seeing online.

Gradius, that is absolutely misinformation in regards to this problem. My Dell U2713HM Rev 01 made in April seems to not have any high pitch noise.

Computer makes high pitched noise when turned on