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PSU remains on after shutdown

This is a discussion on PSU remains on after shutdown within the RAM and Power Supply Support forums, part of the Tech Support Forum category. Hello all, I've just built a new system and the problem I'm having is that after the PC shuts down,


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Old 03-09-2011, 11:35 AM   #1
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Hello all,

I've just built a new system and the problem I'm having is that after the PC shuts down, the PSU remains on. The fans are still spinning and it is still providing power (the case is a BitFenix Colossus, so has lights everywhere).

Has anyone else come across this problem, or know how to fix it?

FYI, my specs are as follows:
PSU: Corsair TX650W (Uk version)
Motherboard: Asus M487TD EVO
Processor: AMD Phenom 2 X4 3.4GHz
RAM: 4 x 2GB DDR3 L7 1600MHz
Graphics: ATI Sapphire HD 6850
Case: BitFenix Colossus Blue/Red Black

Thanks in advance,
:)
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Old 03-09-2011, 02:32 PM   #2
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Are you certain the PC is actually shutting down? Your problem would commonly relate to a faulty PSU but it's doubtful that is the case with the Corsair.



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Old 03-09-2011, 02:46 PM   #3
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I've seen at least one report of this with Corsair power supplies. Swap in a different PSU and see what happens.
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Old 03-09-2011, 02:50 PM   #4
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Check out the power management settings in the BIOS and see if disabling or changing the settings fixes it.
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Old 03-10-2011, 10:42 AM   #5
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Unfortunately, I do not have another PSU to try.
I have looked through the BIOS and changed some settings, but it seems not to make a difference.

I am pretty sure the machine is off, the fans stop on the processor and case, and one can no longer hear the HDD running.

I'm really stumped as to what the problem is. Could it be a faulty PSU?
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Old 03-10-2011, 11:03 AM   #6
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What actually continues to run/stays on after shutdown?



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Old 03-10-2011, 11:25 AM   #7
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The fan within the PSU continues to be on, and the lights on the case (it's got massive blue LED lines all around it) continue to be lit up.
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Old 03-10-2011, 12:24 PM   #8
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PSU Fan Stays On After Shutdown - The Corsair Support Forums



update your motherboard bios / DONT update bios from within windows!

use the USB drive and boot into bios utility during start-up (see mobo manual)



if problem persists after bios udate then RMA the corsair power supply back to manuf
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