High Pitch Ringing

[Karant]

Whenever I turn on my computer (specs listed in sigs, CPU @ 2.6), I hear a constant high pitch ringing from inside my case for the next 10 minutes of use. I first, one by one, stop the fans for a few seconds. Sound wasn't a fan, next I booted it up again and checked my temperatures... all of them were great. I notice no performance difference... and it always does this after I let it rest for a few hours. What could this ringing be? Thanks.

 

[Boltaction]

Power getting old.

 

[thedude42]

I had a problem with an RMA'ed WD Raptor doing this. Absolutely nothing wrong with the performance of the drive, no errors or anything, it just made this really spine tingling whining. They replaced it no questions asked.

 

[Stu55]

I would take a stab and say its the psu...

 

[Karant]

Would make sense... it was a cheap 'ISO' brand $50.00 PSU.