My Mac Pro (2009) sometimes makes a strange ciclic sound (seems something vibrating) which stops when I lightly knock on the front panel with a knuckle. I have no idea of what it could be, I thought it was a hard drive or a fan but they seem to run ok. I also cleaned the inside from dust but sometimes the noise starts again. Anyone has any idea of what it could be?
Thanks for the help!
Thanks for the help!
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