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PSU fan and GPU fans spinning long after shutdown.

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Squeemeister
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2019/11/26 01:11:43 (permalink)
Hi everyone. I recently built a new system, and while I thought everything went fine, it appears I may have an issue.
Here's the specs:
   CPU - i9 9900K (w/DeepCool Castle 360mm AiO)
   MB - Gigabyte Z390 Aorus Pro WiFi
   GPU - Gigabyte Aorus RTX 2080 Super Waterforce
   RAM - 32Gb G.Skill Trident RGB DDR4 3600
   PSU - EVGA SuperNOVA G3 850W
   SSD - 500Gb WD NVMe SSD
   HDD - 1Tb WD Blue Caviar @ 7200 RPM
 
At first, because my case has a window, I only noticed an LED on my MB lit while the computer was shut down. I thought it was some sort of "standby" light, it wasn't until I looked into turning it off that I discovered it (CPU status light) shouldn't be on at all. Upon closer investigation I learned the 2 fans on the GPU's AiO radiator were still spinning after shutdown and a couple of LEDs on the GPU (not the decorative rgb kind) also light up only after shutdown. Finally, the PSU fan continues to spin after shutdown.
 
Edit: In case it's important, the MB has an 8+4 CPU power connector and the GPU has 2x 8pin power connectors.
Also, the LEDs on the GPU that are only lit after the computer is shutdown are meant to indicate "Power Cable Disconnected" when solid, as they are or "Abnormal power supply" when blinking, which they aren't.
 
The MB manufacturer thinks it's either the PSU or a Windows issue. I don't have a spare PSU laying about, or that would be my first test. I also don't have a spare HDD to try a fresh OS install swap. Is there a way to troubleshoot this issue without spare PSU or HDD? Should I just order a new PSU?
 
While the computer has been running like a champ for about 2-3 weeks, I don't want this issue to cripple the system down the road, so any help is greatly appreciated. Thanks in advance!
 
 
post edited by Squeemeister - 2019/11/26 01:18:48
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    Cool GTX
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/11/26 04:28:36 (permalink)
    Welcome to the EVGA Forums
     
    You Only used power cables the Came With That PSU ?
     
    Have you built a PC before, used a Modular PSU before, have any doubt which end plugs into PSU & which end plugs into the device (MB, GPU ...)  ?
     
    If your on Win 10 .... the shut down from Start button is by Default --> Only Hibernate ... "standby"
     
    Did MB Mfg help you make sure your BIOS settings were correct ?  <Sleep Mode> <Standby> .....
     
    All self-power devices - Unplug Everything .... Printer, USB hub, Monitor .... does this change the results ?  (testing for backfeeding power from a device)
     
    Disconnect All power cables from PSU -- Except 24-pin.  With the tester (jumper cap) provided, connect - Does PSU start ? Disconnect tester Does PSU Stop ?
     
    EVGA SuperNOVA 850 G3, Includes Power ON Self Tester, Power Supply 220-G3-0850-X1
     
    If your MB has buttons on it (Start & Reset) Disconnect ALL connections to the PC Case ..... does this change anything ?

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    Sajin
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/11/26 09:19:13 (permalink)
    Go into your bios and enable erp mode. See if that fixes the issue for you.

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    Squeemeister
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/11/27 08:28:20 (permalink)
    Uh oh, I enabled erp mode, shut down and now the system won't reboot. Powers up for a second, then just shuts down again. Please help, what do I do now?!?!
    EDIT: Panic ended, unplugged for several minutes, plugged in again and got it started. Now, on to replying to everyone.
     
     
    post edited by Squeemeister - 2019/11/27 08:35:45
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    Squeemeister
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/11/27 08:50:29 (permalink)
    Ok, first, thank you both for replying.
     
    Cool GTX, here's the answers to your questions:
    PSU provided cables only.
    I have built PCs before, this is my first modular PSU but I had no doubts about which ends were which.
    I had already disabled 'Hibernate' in Win10
    Gigabyte (MB manufacturer) didn't verify BIOS settings at all, it never came up.
    I disconnected the powered USB hub's power and everything was still the same.
    I have not yet tested the PSU using the supplied cap. If all else fails I will do this.
    I have not yet disconnected the case to mb power switch to test that. I don't think my MB has buttons (just flipped through the manual again.)
     
    Sajin, as I mentioned in my panic post above, I enabled ERP mode in my BIOS, and when I shut down, none of the "problem LEDs" were lit and the GPU fans stopped. I haven't shut down a second time, to verify this, because of the reboot scare I just had.
     
    So does this BIOS setting solve everything? There are no problems with my PSU, GPU or MB?
    #5
    Sajin
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/11/27 09:10:09 (permalink)
    Try again and see what happens. Erp mode shouldn't have prevented you from starting the pc.

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    Squeemeister
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/11/27 09:52:19 (permalink)
    Shut down again, confirm that all problem LEDs are off and fans stop.
    But I've got the same weird problem when starting it back up. I made a short video of what happens and what I have to do to get it to reboot. Can't post links here, I guess, so just figure out how to youtube the following: qEWoYIhmACw
    #7
    RainStryke
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/11/27 10:01:53 (permalink)
    I would make sure you have the most recent BIOS update. F11 is the latest BIOS for your motherboard:
    https://www.gigabyte.com/us/Motherboard/Z390-AORUS-PRO-WIFI-rev-10/support#support-dl-bios
     
    If you download the APP Center for Gigabyte and utilize the @BIOS application, you can flash the BIOS that way. It's located under utilities on that support page.

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    Squeemeister
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/11/27 10:20:24 (permalink)
    BIOS already updated to F11.
    I will admit that I have very little experience with BIOS settings. I watched countless videos to prepare for this modern build but I'm sure I missed some things. Feel free to ask about anything, I'll be happy to check, and maybe snap a photo or two.
    #9
    RainStryke
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/11/27 10:31:22 (permalink)
    You won't be able to post pictures until you've met the post count requirement... It's either 10 or 50, can't remember...

    I would double check your BIOS, my Gigabyte board had a hard crash on the BIOS and flipped me over to a back-up that had a much older BIOS. I didn't notice it right away until I went to go check for a new BIOS for the i9 9900KS.


    Also, you have XMP enabled correct? -- XMP RAM without it's profile set can cause some weird things. 

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    Squeemeister
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/11/27 11:30:07 (permalink)
    I Double checked, BIOS still F11.
    Also, XMP has the profile set, working fine at 3600. (Confirmed in Windows and CPU-Z)
    #11
    Cool GTX
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/11/27 11:41:12 (permalink)
    Ultimate Self-Starter Thread For New Members
     
    All you need to know about link & pictures can be found in that link
     
    Maybe "RAM training" was happening after you did the "ERP" change in BIOS - also Any automatic OC feature of MB would cause several reboot attempts as it get sorted out

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    Sajin
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/11/27 12:54:58 (permalink)
    Squeemeister
    Shut down again, confirm that all problem LEDs are off and fans stop.
    But I've got the same weird problem when starting it back up. I made a short video of what happens and what I have to do to get it to reboot. Can't post links here, I guess, so just figure out how to youtube the following: qEWoYIhmACw


    Try this...
     
    #1 Load optimized defaults inside the bios.
    #2 Save and exit the bios and load into windows.
    #3 Restart pc and access the bios.
    #4 Enable erp, and save and exit the bios and load into windows.
    #5 Shutdown pc, and then try starting the pc.

    Want to save 5 to 10% on your next EVGA purchase? Just click on the associates banner to save, or enter the associates code at checkout on your next purchase. If you choose to use my code I want to personally say "Thank You" for using it.
     

     
    #13
    Squeemeister
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/11/27 15:55:39 (permalink)
    Sajin, I followed the steps to the letter but no change.
    After pushing the power button, I still have to push and hold the power button right after it turns off but before the problem LEDs go out. I'm not sure what to think/do at this point.
    #14
    Sajin
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/11/27 15:58:52 (permalink)
    Hmm. Might want to try some older bios versions to see if that might resolve your issue.

    Want to save 5 to 10% on your next EVGA purchase? Just click on the associates banner to save, or enter the associates code at checkout on your next purchase. If you choose to use my code I want to personally say "Thank You" for using it.
     

     
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    Squeemeister
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/12/02 06:08:41 (permalink)
    Hey again everyone! So, I ordered a new PSU, but before unboxing and testing it, one other possibility popped into my head: the RGB hub for my fans. I was extra careful when shopping for one; I made sure it's 5V, not 12 and getting one that's SATA powered seemed smart too, less draw off the MB, right?
    After a couple of reboots, it became clear that having the SATA power cable plugged into the RGB hub caused the issue.
    With SATA power unplugged from hub, system shuts down fine without ERP and doesn't make me play patty-cake to start it up.

    Now I'm left with these questions:
    Why?
    Is it because my MB's RGB headers provide enough power already?
    Is there something wrong with the hub itself? (no manual, no instructions, but it's just 8 ports, 1 mb connector and SATA connector so I wasn't concerned about instructions)
    Could it still be a PSU issue? I'm using the same SATA cable for my HDD and I mention this because whenever I completely power off the system (switch off the PSU and unplug) if I try to reboot my NVMe SSD won't get detected UNLESS I unplug the HDD first, and the power cable is the easiest to access.
     
    If anyone has any ideas, please share. I can't figure out if I should call the PSU tech guys again, and ask them or if I should try to get in touch with the hub manufacturer and ask them, or [heaven forbid] try to get help from gigabyte again.
    And a big THANKS for all your help so far (my fault I didn't mention the hub earlier, i just never imagined that could be an issue).
    #16
    RainStryke
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/12/02 06:48:47 (permalink)
    It was probably causing some kind of weird grounding issue with that connector plugged into the PSU. I wouldn't spend too much effort in figuring out the why... It will usually come with more grief than it's worth.

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    bob16314
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/12/02 20:10:46 (permalink)
    It seems that the mobo's LED headers may be providing voltage when your PC is powered off and feeding it back into the PSU.

    The LED Headers can be set to On/Off when your PC is off..BIOS -> Periperals -> LEDs in Sleep, Hibernation, and Soft Off States -> On/Off..You might also be able to do it in the lighting control software you may have which may (probably) override the BIOS settings..Try turning off the headers in the BIOS and/or control software if they are not and see how it rolls.

    There's are also Digital LED Strip Power Select Jumpers to change the D_LED1 and D_LED2 headers to 5V or 12V.

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    #18
    Squeemeister
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/12/02 21:56:27 (permalink)
    bob16314, thanks for your reply. I'm at work rn, but I will be sure to check those BIOS settings when I get home. I'll keep you posted.
     
    UPDATE: Nope, those have always been set to OFF, both places.
    post edited by Squeemeister - 2019/12/03 15:37:39
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    Squeemeister
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/12/03 15:41:55 (permalink)
    But you know, what you said, "It seems that the mobo's LED headers may be providing voltage when your PC is powered off and feeding it back into the PSU." got me thinking... what if it's the other way around? What if the RGB Splitter is always demanding power from the PSU via SATA but with nowhere to send it, since the fans are forced OFF, the excess is just spilling into the MB's header and then finding its way to any nearby outlet? Would that explain the PSU fan remaining on too? Since the Splitter is basically saying "gimme gimme gimme"?
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    bob16314
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/12/03 21:45:28 (permalink)
    Squeemeister
    But you know, what you said, "It seems that the mobo's LED headers may be providing voltage when your PC is powered off and feeding it back into the PSU." got me thinking... what if it's the other way around? What if the RGB Splitter is always demanding power from the PSU via SATA but with nowhere to send it, since the fans are forced OFF, the excess is just spilling into the MB's header and then finding its way to any nearby outlet? Would that explain the PSU fan remaining on too? Since the Splitter is basically saying "gimme gimme gimme"?


    I don't think that's possible.
     
    Did you turn off the headers in the BIOS and/or software and see if it mattered?..Or you could just simply unplug the cable from the header.
     

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    #21
    Squeemeister
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/12/04 04:56:32 (permalink)
    bob16314, sorry, i felt like i was bumping my own thread so I just made an edit update to the previous thread. i'm weird.
    Those BIOS settings have always been off, both in the BIOS directly as well as the RGB Fusion app. If I unplug the cable from the header, I can't control the RGB anymore.
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    Squeemeister
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    Re: PSU fan and GPU fans spinning long after shutdown. 2019/12/07 05:27:54 (permalink)
    The white LED on the rgb hub is lit even when pc is shutdown and the hub is only connected to the D_LED1 header on mb. The manufacturer of the hub doesn't look like they're going to reply to my email, so I'm unable to get any straight answers. As much as I don't want to deal with it, I might have to swap out the PSU with a new one just to completely rule out "PSU problem". I'll let you know the results once I work up the patience to rewire this beast.
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