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Thread: AsRock z97 Extreme 9 wont power on




  1. #21
    MlogStryker is offline Junior Member
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    Default Re: AsRock z97 Extreme 9 wont power on

    Quote Originally Posted by parsec View Post
    Your power cable connections all sound right.

    The need to remove the two connectors for the 24 pin, main ATX cable is ridiculous, I've never had to do such a thing, and never heard of that before. Given that, IMO it's either the PSU or the board itself has some odd issue. What disconnecting and reconnecting those cables does is beyond me, but you should not need to do that.

    Testing the board with a different PSU is a given IMO, I know you will be doing that, so good luck!!
    Being that this corsair ax850 is already the second psu I have used does that lean to more of a motherboard issue? The reason I got rid of the cooler master silent pro 1000 was because It's fans and the case fans would randomly go to full speed. That happened both during gaming and at idle, could both of these situations be caused by the same thing - a fault in the mobo, but each psu handled it differently?

  2. #22
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    parsec is offline Senior Member
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    Default Re: AsRock z97 Extreme 9 wont power on

    Normally a PSU's fan speed is determined by its temperature, which increases due to a higher load on the PSU, it's putting out more power. The same goes for the case fans, if they are connected to the board and are speed controlled by temperature. I have no idea how your case fans are connected and configured.

    The same thing causing the CM PSU to run its fan at high speed, and causing the Corsair PSU to shut down? I thought the use of that special option when you were gaming was causing the Corsair PSU to shut down?

    If your frame rate drops when you use that Discharge skill, that is mainly the video card being stressed out, don't you think? Games vary on how much CPU usage they require, but usually CPU load is not an issue with games. But the things you did to keep the CPU power usage down, which then stopped the shutdown (right?) have me wondering about the board now.

    I forgot, did limiting the CPU speed consistently keep the PC from shutting off?

    It seems like under certain conditions the board might be drawing high amounts of power from the PSU. That would normally be for providing power to the CPU, since the board does not supply much power to a video card. So that might be a problem with the board's voltage regulation stage (usually called the VRM) for the CPU, an out of spec part causing more power to be drawn from the PSU than is really necessary, similar to a short circuit, when it heats up or passes a threshold of some kind. ONLY a theory, that is not a known, common problem for mother boards.

    A problem like this is also why you were asked to run a CPU stress test, which also puts stress on the PSU and VRM. Since it survived that with great CPU temperatures, the mystery only gets worse.

    Normally a high end video card like yours uses the most power compared to all other parts of a PC. I also wonder about VSync, since it is a new feature we don't know much about in terms of its affect on PC hardware, if it even does affect it. VSync is done in the monitor, right?

    Testing with a third PSU will be interesting, I literally wish I lived nearby you so I could have you try some of the PSUs I have, just to see what happens.

    BTW, I tried to check out a "cooler master silent pro 1000" PSU, but found multiple models, Bronze, Gold, and Platinum 80+ types, as well as the "M2", so not sure which one, not that it matters really.

  3. #23
    MlogStryker is offline Junior Member
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    Default Re: AsRock z97 Extreme 9 wont power on

    Quote Originally Posted by parsec View Post
    Normally a PSU's fan speed is determined by its temperature, which increases due to a higher load on the PSU, it's putting out more power. The same goes for the case fans, if they are connected to the board and are speed controlled by temperature. I have no idea how your case fans are connected and configured.

    The same thing causing the CM PSU to run its fan at high speed, and causing the Corsair PSU to shut down? I thought the use of that special option when you were gaming was causing the Corsair PSU to shut down?

    If your frame rate drops when you use that Discharge skill, that is mainly the video card being stressed out, don't you think? Games vary on how much CPU usage they require, but usually CPU load is not an issue with games. But the things you did to keep the CPU power usage down, which then stopped the shutdown (right?) have me wondering about the board now.

    I forgot, did limiting the CPU speed consistently keep the PC from shutting off?

    It seems like under certain conditions the board might be drawing high amounts of power from the PSU. That would normally be for providing power to the CPU, since the board does not supply much power to a video card. So that might be a problem with the board's voltage regulation stage (usually called the VRM) for the CPU, an out of spec part causing more power to be drawn from the PSU than is really necessary, similar to a short circuit, when it heats up or passes a threshold of some kind. ONLY a theory, that is not a known, common problem for mother boards.

    A problem like this is also why you were asked to run a CPU stress test, which also puts stress on the PSU and VRM. Since it survived that with great CPU temperatures, the mystery only gets worse.

    Normally a high end video card like yours uses the most power compared to all other parts of a PC. I also wonder about VSync, since it is a new feature we don't know much about in terms of its affect on PC hardware, if it even does affect it. VSync is done in the monitor, right?

    Testing with a third PSU will be interesting, I literally wish I lived nearby you so I could have you try some of the PSUs I have, just to see what happens.

    BTW, I tried to check out a "cooler master silent pro 1000" PSU, but found multiple models, Bronze, Gold, and Platinum 80+ types, as well as the "M2", so not sure which one, not that it matters really.
    I had not been playing this game when I had the CM PSU, so it is undetermined if the 2 issues are related. The case fans are plugged into a molex cable from the psu, and connected to the case for speed control. So I would assume if the CM PSU was having issues and causing extra voltage to run through that molex cable would be the only way for the fans to increase on their own. That issue didn't happen long because I removed the psu and RMA'd it in case it was going to harm my components.

    Yes, when I had lowered the cpu max speed I didn't experience any shutdowns, and I had gone through several very close repeat situations. (the issue seems to come from using Discharge when a Rare Stongbox spawns enemys, I used Discharge on both normal and magic strongboxes with no issues, but I don't believe I tried it on a Rare one.) All the stongbox's are random and it was only after having reset the cpu to max settings I cam accross a Rare one, and figured that was the trigger.

    I currently have an Antec HCG 850M running, and I am in the process of trying to find another Stongbox to see if I can trigger the fault again.

    I will keep you posted.

  4. #24
    MlogStryker is offline Junior Member
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    Default Re: AsRock z97 Extreme 9 wont power on

    So I was able to almost entirly recreate the circumstances and I didn't have any issues this time. I did open a Rare Stongbox, but (for some reason it didn't dawn on me until now that I can make the stongboxes I come across rare) being that I made it rare it was identified, as opposed to me not knowing what mods are on the Strongbox.

    Quote Originally Posted by parsec View Post
    It seems like under certain conditions the board might be drawing high amounts of power from the PSU. That would normally be for providing power to the CPU, since the board does not supply much power to a video card. So that might be a problem with the board's voltage regulation stage (usually called the VRM) for the CPU, an out of spec part causing more power to be drawn from the PSU than is really necessary, similar to a short circuit, when it heats up or passes a threshold of some kind. ONLY a theory, that is not a known, common problem for mother boards.
    I agree with your thought that it is possible that under certain conditions the board might be drawing high amounts of power from the PSU, coupled with the fact that the gpu is drawing quite a bit of power from the PSU and there are all the over voltage / current protections, is it possible that with the AX 850 having 1 +12V rail, something peaked it and tripped an internal PSU protection. The new PSU the Antec HCG 850m has 2 +12V rails, so is it possible that the GPU / Board / CPU are still drawing that peak Voltage / Current but being that the load is spread between 2 +12V rails there is more "bandwidth" in the PSU to absorb that draw?

    Unless I run into another crash I will consider my problem fixed and won't keep this thread updated, unless replying to others comments.

    Thanks for all your inputs parsec / profjim, I really do appreciate it.

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