Page 1 of 2 12 LastLast
Results 1 to 10 of 13

Thread: Noisy Motherboard

  1. #1
    Join Date
    Jun 2009
    Posts
    119
    Thanks Thanks Given 
    3
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default Noisy Motherboard

    After installing a PSU my motherboard started making noises similar to hard drive noises. At first I thought it was the hard drive, however, after trying my hard drive in another system and listening to where the noise is coming from I realized it is coming from the motherboard CPU area! It is making intermittent buzzing noises. For the moment my computer seems to be working fine. Why would a motherboard make noise?

  2. #2
    Join Date
    Apr 2008
    Posts
    403
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    There are plenty of electronic components that can make noise that are fairly normal, but coming from the CPU area sounds weird. What is the mobo in question? I'm pretty sure cpu voltage regulators include inductors which have a tendency to vibrate at audible frequencies with no ill effects, but I could be wrong.

  3. #3
    Join Date
    Mar 2009
    Location
    Kalamazoo, Michigan
    Posts
    1,072
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    Our old dell dimension with a delta 300w in it does the same thing.

    Sounds like a angry cat for a second.
    Quote Originally Posted by JFK
    The American, by nature, is optimistic. He is experimental, an inventor and a builder who builds best when called upon to build greatly

  4. #4
    Join Date
    Jun 2009
    Posts
    119
    Thanks Thanks Given 
    3
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    It's an Abit AN8 32X board.

    Is it possible it is due to an over-voltage? Right now speedfan tells me the 24 pin voltage is 12.42 and 4 pin voltage is 12.36. At idle with my old PSU the voltage was around 12.04 to 11.94. When I run a game or put the CPU under full load the noise goes away. When this happens the 12V voltage does drop a little, so this would support that theory. Also the noise starts once I get into Windows. During the BIOS screens it is almost silent.

  5. #5
    Join Date
    Mar 2009
    Location
    Kalamazoo, Michigan
    Posts
    1,072
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    Never use software for readings, always use a DMM.
    Quote Originally Posted by JFK
    The American, by nature, is optimistic. He is experimental, an inventor and a builder who builds best when called upon to build greatly

  6. #6
    Join Date
    Jun 2008
    Location
    Brazil
    Posts
    16
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    Quote Originally Posted by rty View Post
    It's an Abit AN8 32X board.

    Is it possible it is due to an over-voltage? Right now speedfan tells me the 24 pin voltage is 12.42 and 4 pin voltage is 12.36. At idle with my old PSU the voltage was around 12.04 to 11.94. When I run a game or put the CPU under full load the noise goes away. When this happens the 12V voltage does drop a little, so this would support that theory. Also the noise starts once I get into Windows. During the BIOS screens it is almost silent.
    Those voltages are not yet considered as over-voltage, but motherboard voltage regulators will change duty cycle to work with them and their inductors can vibrate due to that. If that is the case it's not a PSU problem and although anoying will not harm your motherboard.

    Note: software measurements are not always reliable; it is better to use a digital multimeter as suggested by 370forlife. Valid voltage range from +12V output is 11.4 - 12.6 volts.

  7. #7
    Join Date
    Jun 2009
    Posts
    119
    Thanks Thanks Given 
    3
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    After listening more closely I think the noise is coming not from the motherboard but from the PSU.

  8. #8
    Join Date
    Mar 2009
    Location
    Kalamazoo, Michigan
    Posts
    1,072
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    What company is the psu from...
    Quote Originally Posted by JFK
    The American, by nature, is optimistic. He is experimental, an inventor and a builder who builds best when called upon to build greatly

  9. #9
    Join Date
    Jun 2009
    Posts
    119
    Thanks Thanks Given 
    3
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    Seasonic. It's a brand new PSU as well.

  10. #10
    Join Date
    Jun 2009
    Posts
    119
    Thanks Thanks Given 
    3
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    It seems I am not the only one having a problem with the noise from this PSU.

    http://www.newegg.ca/Product/Product...ge=1&Keywords=

Similar Threads

  1. Seasonic Focus Noisy?
    By Schofts in forum PC Power Supply Discussion
    Replies: 5
    Last Post: 11-13-2017, 01:16 PM
  2. XFX Core Pro 850w - 'noisy' fan.
    By sniperzoz in forum PC Power Supply Discussion
    Replies: 1
    Last Post: 12-22-2013, 03:45 PM
  3. Fan replacement for noisy FSP psu
    By jguy in forum PC Power Supply Discussion
    Replies: 3
    Last Post: 02-13-2013, 12:02 PM
  4. Fan on Seasonic M12 600W is now noisy
    By oneils in forum PC Power Supply Discussion
    Replies: 4
    Last Post: 08-02-2011, 06:24 PM
  5. help my case is noisy,....
    By ianm2 in forum General PC Hardware
    Replies: 2
    Last Post: 07-26-2008, 06:26 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •