I bought a used AX6BC motherboard and it's making a high-pitched noise. The\nnoise seems to be coming from behind the CPU or possibly right in front of\nit. It happens whether I have a Celeron 500 or a 600 overclocked to 900 in\nit. The noise is different depending on which cpu is in it and what it's\ndoing. Neither CPU creates a noise when it's idle. The C500 has a sort of\npulsing noise when running Prime95 and a more steady tone when doing other\nstuff. The C600@900 makes no noise when running Prime95 but makes a steady\ntone just like the 500 when doing other stuff. It's not a coppermine\napproved lot and I was wondering if it might have been damaged from running\na Celeron 600@900 in it. I've never heard of a motherboard making noises\nbefore.\n\nI have a couple of wav's of the noise but I don't know what the policy on\nposting binaries is for this group. If someone tells me whether it's ok or\nnot I'll post them. Rar'ed they're about 350k.