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  1.    26 Jan 2016 #1
    Join Date : Jan 2016
    Posts : 17
    Windows 10 Pro x64

    CPU Fan slows to almost halt after waking up from sleep/hibernation


    First post, have had this problem now since installing Windows 10 for the first time. Have re-installed 10+ times, from new downloaded ISO's with hash tag checks just to make sure. Have bought all new hardware as well; CPU, PSU, Mainboard, Computer case, CPU Fan (3 of them), problem still persists, is obviously a Windows 10 problem.

    CPU Fan slows to almost halt after waking up from sleep/hibernation.

    System Information
      My ComputerSystem Spec
  2.    26 Jan 2016 #2
    Join Date : Jul 2015
    Posts : 267
    Windows 10

    A very long shot suggestion – check your C states in bios. If they are enabled, disable and check the fan behavior.
      My ComputerSystem Spec
  3.    26 Jan 2016 #3
    Join Date : Oct 2013
    NW Florida
    Posts : 9,689
    Windows 10 Pro and Windows 10 Pro Insider

    How are your Radiator fans connected? Are they connected to the pump to regulate them or to a motherboard header? With or without a spliter?
      My ComputersSystem Spec
  4.    28 Jan 2016 #4
    Join Date : Jan 2016
    Posts : 17
    Windows 10 Pro x64
    Thread Starter

    A very long shot suggestion check your C states in bios. If they are enabled, disable and check the fan behavior.
    I disabled all CPU features in this board, and the previous. One at a time/all at once/enabling other features/etc...

    Quote Originally Posted by essenbe View Post
    How are your Radiator fans connected? Are they connected to the pump to regulate them or to a motherboard header? With or without a spliter?
    The problem persisted before the water cooler. The pump is connected to the "pwr_fan" header on the board. The fans are connected to the CPU 4 pin via a splitter. EDIT: I just moved the fan connecter to the "pwr_fan" and the pump to the CPU.

    I unplugged all USB connections but mouse and keyboard (Bought new mouse and keyboard as well) unhooked SATA CD drive and PCI wireless adapter. I have done MEM tests on the RAM, hard drive checks, etc...

    Problem is still persisting. Thank you all for the replies and helps.

    I am now getting other weird signs when it wakes from sleep. My computer used to just freeze and shut off after awhile (Even on my old hardware) I'm assuming this was because of my CPU overheating, but now I have a watercooler, and a new CPU. It does other weird things that makes the system unstable. I'm assuming my last mainboard (The built in sound stopped working, even after multiple installs of OS's) overheated and blew itself. Now this mainboard is doing the same. Take a look at speed fan screenshots. This seems like a Windows OS bug, and a MAJOR one if it's causing my components to have to be replaced. I've replaced every hardware component with new and better ones (Check my system specs, I was planning on building a new gaming rig anyways) The hardware I did not replace, disabled/took out of the computer (Wireless PCI card, SATA CD drive, USB devices) just to make sure it was NOTHING I owned. There is literally no hardware that is the same from when this started happening (When I updated to Windows 10).

    This is frustrating, and could get expensive if parts fail due to overheating. My water cooler CPU fans slow to almost a halt (Just like my old CPU fan on my stock cooler on my old CPU did) as you can see in the picture. It also appears that the north/south bridge mainboard overheats to almost critical levels. Yet NO program is running that would cause this. I've done clean installs, with no programs, with programs, with certain hardware, without certain hardware, with different BIOS options enabled and disabled, and also just plain replaced everything down to the mainboard itself. Yet I still have the same problem... Maybe it only affects certain boards, or AMD setups. I have eliminated EVERY variable.

    The simple fix is obviously to go into power settings and set it to (high performance mode) and not to use the sleep function. That just lets my computer run 24/7 - high electric bill. If anyone wants to take a shot in the dark at this I guess feel free. I have literally done everything anyone here would do though (I'm a computer enthusiast and very skilled) but I can overlook things as well. So thanks to anyone who would like to help. I appreciate it very much.

    Now I guess I just need advice on how I go about letting someone know about this that can help. Microsoft?

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    Current system specs

    Old system specs when this was still going on. The picture was taken in Windows 8.1, no sleep problems on it. Problems started with Windows 10.

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    Last edited by JacobDrivers; 28 Jan 2016 at 09:41. Reason: Double post and more info
      My ComputerSystem Spec
  5.    28 Jan 2016 #5
    Join Date : Oct 2013
    NW Florida
    Posts : 9,689
    Windows 10 Pro and Windows 10 Pro Insider

    Jacob, I moved the double post. I am not sure I can help with your problem though. Have you used other Utilities to check fan speed and temps? Speedfan is notoriously inaccurate and, as I understand it, they average some of the fan speeds and temps. If you look at the Speedfan screenshot and notice that Temp3 is -128C, I can assure you that is not correct.

    Problems of waking from sleep are not uncommon for this OS or many others. Can you hear a difference in fan speeds? I use a fan controller, so I don't have that problem. There were problems back in Windows 7 with waking from sleep. If your motherboard has the ability to set fan curves in BIOS, I would take the fans off the splitter and put them on separate headers and set a fan profiles in BIOS for them. BIOS and the OS are separate and the OS has no control over BIOS. I would also uninstall any Gigabyte utilities you have installed. They have caused a multitude of problems in the past.
      My ComputersSystem Spec
  6.    28 Jan 2016 #6
    Join Date : Jan 2016
    Posts : 17
    Windows 10 Pro x64
    Thread Starter

    Quote Originally Posted by essenbe View Post
    Jacob, I moved the double post. I am not sure I can help with your problem though. Have you used other Utilities to check fan speed and temps? Speedfan is notoriously inaccurate and, as I understand it, the average some of the fan speeds and temps. If you look at the Speedfan screenshot and notice that Temp3 is -128C, I can assure you that is not correct.

    Problems of waking from sleep are not uncommon for this OS or many others. Can you hear a difference in fan speeds? I use a fan controller, so I don't have that problem. There were problems back in Windows 7 with waking from sleep. If your motherboard has the ability to set fan curves in BIOS, I would take the fans off the splitter and put them on separate headers and set a fan profile in BIOS. BIOS and the OS are separate and the OS has no control over BIOS. I would also uninstall any Gigabyte utilities you have installed. They have caused a multitude of problems in the past.
    Thank you for the reply and removing the double post.

    I uninstalled the gigabyte utilities (You are right, they are notorious, especially for Windows 10) It seems like the fans no longer almost stop to a halt with that utility gone.

    I forgot to post that speedfan shows accurate temperatures before waking from sleep.

    Click image for larger version. 

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    My case also has built in fan controllers for Low, stop, and High (Very convenient). The only fans that are connected to the board are the radiator fans for the CPU. I'm assuming Temp 2 is my north/south bridge on the mainboard. As you can see it is at a fine temperature now, as you can also see in the previous picture from after waking from sleep, it is not, probably almost critical, at least for a mainboard.

    I am very lost at what to do. I did not know that Windows 7 had sleep problems with individuals (Very interesting). I thought that it could just be my mainboard not cooperating with the new OS, so I had it replaced with the Gigabyte 990FXA-UD3 rev 4.1 which "says" it is compatible with Windows 10. I may have just got unlucky, and the new board also doesn't want to play nice just as the old board. I may just have to shell out more money and just replace the board with a new board... and make sure I get the best/newest for the best price.

    This is more intriguing and annoying than anything. Maybe someone with the same problems will run across this as well. I will be leaving reviews for both of these boards and the problems I've had... so others don't have them.

    Google doesn't seem to provide much help, which is why I was even more intrigued. I figured such a problem would be plastered about both the boards on sites. I can't find anyone with the same problem.

    With "balance" performance being the default preset for power options (Meaning it goes to sleep after 30 minutes) others would have faced the same delima.

    The overheating almost took out my new water cooler. It was able to dissipate the heat, but in the process, it now does not cool the processor as well as before. I removed the pump and removed the old thermal paste (Which was burnt and almost gone) and applied new. It still doesn't give the same temperatures as before (Used to idle below C 20 which I know isn't accurate due to how AMD reports processor heat, but still means that it is very cool) and as I said, if this problem is so bad it's taking out components. I don't see why there isn't an answer.
      My ComputerSystem Spec
  7.    28 Jan 2016 #7
    Join Date : Oct 2013
    NW Florida
    Posts : 9,689
    Windows 10 Pro and Windows 10 Pro Insider

    From reading some of the dump files in Windows 7, it seemed that when the OS woke up, not all the drivers woke up with it. At least that was my take on it. But, I can't see how that could be your problem. What would be an interesting test is if you were to install Windows 7 or 8.1 and see if you have the same problem. If your fans are controlled by the BIOS, the OS should not affect them at all, I would think. If they were being controlled by software in the OS, then yes, I can see that happening.
      My ComputersSystem Spec
  8.    28 Jan 2016 #8
    Join Date : Jan 2016
    Posts : 17
    Windows 10 Pro x64
    Thread Starter

    Quote Originally Posted by essenbe View Post
    From reading some of the dump files in Windows 7, it seemed that when the OS woke up, not all the drivers woke up with it. At least that was my take on it. But, I can't see how that could be your problem. What would be an interesting test is if you were to install Windows 7 or 8.1 and see if you have the same problem. If your fans are controlled by the BIOS, the OS should not affect them at all, I would think. If they were being controlled by software in the OS, then yes, I can see that happening.
    This is what I'm thinking. I think that sleep mode is bypassing the BIOS and/or certain drivers aren't being loaded (Windows 10 problem). What tests should I run? I can install Windows 7 on a partition or a spare hard drive and see. Would you like me to post back? Or Windows 8.1... which I think Microsoft ended support for?
      My ComputerSystem Spec
  9.    28 Jan 2016 #9
    Join Date : Oct 2013
    NW Florida
    Posts : 9,689
    Windows 10 Pro and Windows 10 Pro Insider

    It would be interesting if you did try. There are no drivers, I don't think, that would affect fan speed. They are controlled by how much voltage they get. If you want to try, install it on a spare hard drive and disconnect all other drives during the install, or you could end up in a dual boot situation. That would cause issues when going back to a single OS. Windows 8.1 is still supported as is windows 7. Are you sure that all the C states are enabled in BIOS? That's how bios enables sleep and hibernation.
      My ComputersSystem Spec
  10.    28 Jan 2016 #10
    Join Date : Jan 2016
    Posts : 17
    Windows 10 Pro x64
    Thread Starter

    These are the only "C states" options I could find (This isn't my BIOS screenshot, but is the same as mine)

    Click image for larger version. 

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      My ComputerSystem Spec

 
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