[iMore Question]

Hello There, I recently got a refurbished 5k iMac 27 inch 3.8ghz from apple's website I used it almost a week and I have noticed that some hissing noise near the power button when I turn off my Mac or only once when turn on my Mac and I also have boot camp installed and it does not happen their but today I wanted to test this hibernate feature in windows so I did it and it shut off with that noise and when I turn it on it turn on with that noise so is this normal? Do I have an defective iMac? If so I don't have an apple store near

[Spencerdl]

Welcome to iMore. Feel free to join and become a member. I personally don't have an iMac (wish I did), I would think any "hissing" noise would not be normal, but maybe someone will chime in with more help.