Hi Daniel, yes, both have two power supplies, i already did the reseating and swapping. There is no add-on cards, keyboard or any unnecesary thing, all fans are working fine, the only fan that have problems, is the power supply fan, 6 second later of power the system on, the fan sounds like if it loose power and the velocity goes up and down, and it only happens when the power3 cable is plugged in. And yes, there are lights on the system board. I don't know what to do, is strange.
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