Power Supply high pitched squeal after motharboard replacement

I recently RMA'd my Asus Sabertooth 990FX for a replacement, and up until then, my power supply has been fairly silent. After I put the new replacement board in, as soon as I plugged it in and turned it on, I heard the squeal. I put my ear up to the power supply, and it's definitely coming from there.

What would cause this all of a sudden..? The new motherboard is the problem, or the power supply? It seems odd that it would just suddenly start doing this. It may also be worth noting, the squealing changes pitch depending on what I'm doing.. Like for example, when I first started my PC this morning, and I opened up Chrome and all my web pages were loading, it was squealing pretty aggressively all of a sudden, with a higher pitch. Weird huh?

http://www.newegg.com/Product/Product.aspx?Item=N82E16817379007 = my power supply
6 answers Last reply
More about power supply high pitched squeal motharboard replacement
  1. Hi, sound coming from PSU and everything works ok ? By the look of the description it could be the PSU. Tested it? If not then go with Prime95 or S&M stress test. Both of them have the test for it.
  2. I just ran prime95, and a gpu stress tester, both of those caused the squealing sound to go mad. So the more load that's on the system (i'm imaging whatever's sucking the most power), makes it worse.
  3. have you got another system/psu - motherboard+cpu+fan you can test?

    i had a similar problem a year ago, swapped out psu and it wasnt that as noise persisted, tested it and it was cpu wine


    im convinced now the psu was drowning out cpu wine.


    fans can make that kind of noise as well, doubt its the motherboard if its brand new
  4. Dont have any spares to try, no.. What I don't understand, is how everything could run perfectly fine before, and right after, with all the same parts except the new motherboard (same model), the high pitched squealing.

    Could it possibly be the motherboard? I put my ear up to the sound, and it's hard to tell if it's coming from the power supply, or the bottom of my motherboard (my case mounts the power supply at the bottom of the case, right below the motherboard), but it's definitely one or the other. I noticed the sound changes even when I'm in the BIOS, when I move my mouse around or click stuff.
  5. are you going to wait for that power supply to ruin more hardware or are you going to stop using your machine until you replace it ?

    don't leave the machine running unattended. if you ever had a cap go you'd know why.
  6. swifty_morgan said:
    are you going to wait for that power supply to ruin more hardware or are you going to stop using your machine until you replace it ?

    don't leave the machine running unattended. if you ever had a cap go you'd know why.


    what brand power supply are you using?


    would suggest spending at least $40-50 minimum on a quality powersupply

    as everything is directly plugged into it if it goes. it will create a big whole in your wallet
Ask a new question

Read More

Power Supplies Sabertooth Components Product