It was indeed the power supply. It's happy again now. -Steve G J wrote: > Does the sound sound like a fan? I'm not familiar with servers all that > much but the older Dell I do have has a power regulation module, and I > believe these are just switch mode power supplies acting as DC to DC > converters, the high frequency transformers in switch mode power > supplies can make a noise similar to a fan...just a shot in the dark, > but if there are no other moving parts, a buzzing transformer is pretty > much all that's left to make a noise. My 2 cents. > > =Jesse= >