Edgargr Posted November 29, 2021 Share Posted November 29, 2021 The self-test of the PSU passed, but once it is connected to a motherboard, it shuts off after 1 second, and the red solid led light turns on. Unfortunately, it seems like one of the cables (standard kit - brand new), either for the CPU (2 cables) or the ones to the motherboard, so some of them are faulty because it does not turn on (I already tested the Computer with another PSU, and it works fine). I did check them several times, and only the essential cables are connected to reduce the scope. But the behavior seen is like when the CPU is not receiving enough energy or the CPU cooler is not receiving power, and the motherboard does not allow for the PC to continue to be on for more than 1.5 seconds. And the PC components are OK because I have a 650w PSU that I was using, and I did reconnect it again to make sure the issue was not any of my components, but all is working fine with the 650w PSU. Like the guy from this post, I do suspect the cables, either the CPU ones or the motherboard cable (since these cables come with a capacitor(s)), could be potentially faulty:https://forum.corsair.com/forums/topic/153566-new-ax1600i-doa/#comment-906553 I did order a new kit of Corsair cables (SKU CP-8920223) just to rule that issue from above or any other issue with the cables. But I will be able to test it as soon they arrive between today and tomorrow. Also checked the MB and CPU cable connectors to discard this issue (the connectors are OK):https://forum.corsair.com/forums/topic/153819-new-rm850-gt-computer-not-starting-up/ Here is a Google Drive folder with all the pictures and videos showing the behavior:https://bit.ly/3IfLVZR ----- Summary: -Is not due to the motherboard. -Is not due to the GPU. -Is not due to the CMOS battery in the motherboard. -Is not due to the CPU or its AIO. -Is not due to the RAM. I will test it with a new set of cables soon. If any of you have any additional suggestions other than testing the PSU with a new set of cables, please let me know. Thank you, Link to comment Share on other sites More sharing options...
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