high pitch low volume whining noise

[N11]

I have an IBM 60gxp drive, and am now hearing a really high pitch low volume squeel coming out of the system.

I can't identify where it's coming from. I just added a new radeon 9500 pro and I was wondering if it was the fan on the card -- however, the noise only starts happening when there is mouse movement or any activity on the system.

Is this a warning sign of failure to come? Or a perhaps a fan somewhere?

Really hard to determine the precise source of the sound.

 

[N11]

It seems to be coming from my enermax whisper 365 psu.... very light but noticeable. Any thoughts on this?

 

[tjaisv]

You know what I have the same problem! I'm using the Enermax 431W and it makes this same intermittent low-volume high-pitch buzzing/ringing/squeeling noise that you're experiencing. At first I thought it was coming from my Lite-On drives or my motherboard but upon further inspection I noticed it was definitely coming from the power supply. And like you said, it happens practically whenever you move the mouse. Curiously, though, the noise stops whenever I drag the IE browser scrollbar down or move the mouse to certain parts of the screen; but then it comes right back on as soon as I move the mouse again. A weird problem, and bothersome too because I can hear it loud and clear through my earphones.

I'm going to email Enermax Tech Support to see if they know what the problem might be. Hopefully this isn't a typical problem that Enermax power supplies have.

Feedback from current Enermax users would be appreciated. I'll be reporting back in here so stay tuned.


System Specs:
Athlon XP 2400+ (overclocked to 2600+)
SLK-800 with Thermaltake Smart Case Fan2
Epox 8RDA+ with onboard nForce2 audio enabled
ATI Radeon 9500 Pro
Western Digital 2000JBRTL 200GB 8MB Cache
Lite-On 16x DVD-ROM
Lite-On 48x CD-RW
Cendyne DVD-R/RW
Promise Ultra-ATA RAID card
Logitech MX300 mouse
MS Natural Keyboard
Windows XP Pro
Enermax 431W

 

[yellowperil]

I had the same problem with an Enlight PSU. Oddly it only occurred when scrolling the mouse wheel or using the Pg Up/Down keys. Anyway I replaced it with a Sparkle PSU and haven't had the problem since.