Fan slows down and becomes noisy after a while of using PC

Hi

So I noticed after using PC for a couple of hours there was a noise coming from my PC. Having isolated this noise it is coming from the power supply where the fans starts doing a very rigid slow spinning. THe only way I can make noise go away is by restarting computer or by tilting the PC to its side and then putting it up right. Has anyone experience this?

Thanks
7 answers Last reply
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  1. I have a older PSU which has a slightly noisy fan. I would advise getting a new PSU or, if you like to take dangerous risks, buying a new PSU fan.
  2. Hhhm well I built the PC literally a week ago, so I know its not an issue to do with age. Just strange how the noise only comes on after a few hours and how it dissapears when I tilt the PC to one side.

    If I cant find an answer in the next hour I will return this and get a new power supply
  3. dbuk2000 said:
    Hhhm well I built the PC literally a week ago, so I know its not an issue to do with age. Just strange how the noise only comes on after a few hours and how it dissapears when I tilt the PC to one side.

    If I cant find an answer in the next hour I will return this and get a new power supply


    I would return it anyway if its new.
    What brand is the PSU?
  4. Its Corsair Builder Series CX 500 Watt ATX/EPS 80 PLUS Bronze Power Supply Unit

    http://www.amazon.co.uk/gp/product/B009RMP2VE/ref=oh_details_o06_s00_i00?ie=UTF8&psc=1

    had got very positive reviews everywhere
  5. The CX series are made by CWT. I would advise a SeaSonic-made PSU like XFX etc..
  6. @ OP, yes replace the PSU ASAP, and CX series is budget PSU's, so not the best one out there. Try XFX 550W PRO, Corsair HX or TX series, Seasonic, Antec.
  7. Sound like you got a unit with a defective fan. Specifically a bad bearing. Once it heats up it no longer spins freely due to expansion of the materials. Turing on side changes axis, which apparently helps the fan...

    Simply RMA for a new unit..... (which CX500 is a basic unit I see no reason to replace it. I have 3 CX600M's all running perfectly....)
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