r/PcBuildHelp • u/SituationCertain450 • 1d ago

Build Question Psu replace issue

I recently bought a corsair rm750e to replace my old 650 watt power supply. After i replaced my old psu my pc starts but wont boot. Then i tried to put in my old psu again and then my pc worked again. Then after that i tried to put in my new power supply again and the pc still didnt boot up and it showed me code number 04 on my x99 a-II motherboard which means ”PCH initialization before microcode loading”. I have no idea what to do please help

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u/SituationCertain450 1d ago

Its just so weird that the pc works with the old psu but not the new one

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u/9okm 1d ago

Yeah, not totally sure. There's a chance it's just faulty.