Problem With Connector Sys FAN7 Godlike Max Z790

Joined
Jan 29, 2024
Messages
14
Hello,

I have a problem with the "Sys Fan7" connector of my MSI Godlike Max Z790 Motherboard (only this specific connector).

Indeed, the fan connected to this connector starts to spin erratically at maximum power for about 3 seconds before slowly going back down to its normal programmed rotation speed.

This problem repeats itself at about 2 minute intervals each time.

By connecting another fan directly to this connector in question, the problem also occurs on this fan connected to this same connector.

-Is anyone else experiencing the same problem?
 
Ok. And you control it via a fan curve in the BIOS, i'm assuming? Can you show a photo/screenshot of it?

If it's like i think it may be and this header has some kind of problem, i would probably use some workaround, like putting two fans on one header via a Y-adapter cable for example. Because i'd assume that MSI would want to replace the whole board over this, which is definitely too much hassle to do over one problematic fan header.
 
Hello,

Yes I have programmed a custom curve in the BIOS for this fan, but I can't attach the photo here because it is too big for the server.

I also noticed that for the fan in question, the monitoring control software (AIDA64...) indicates rotation values almost out of range (around 12,000 RPM), and the indicated speed decreases as the fan increases its speed (strange...)

Only the BIOS and the MSI Center software display the correct speed of the fan in question. This problem annoys me because I paid an exorbitant price for this Motherboard and the quality is not even there apparently...

MSI support only suggests that I contact my reseller for the problem to be taken care of, and moreover it seems that this Motherboard is no longer available on the market...
 
Yes I have programmed a custom curve in the BIOS for this fan, but I can't attach the photo here because it is too big for the server.

Either resize it down, or upload it to an image hoster and link it here.
Examples: https://imgbox.com/ , https://imgbb.com/ , https://imageshack.com/ , https://imgur.com/ , https://postimages.org/ .

MSI support only suggests that I contact my reseller for the problem to be taken care of, and moreover it seems that this Motherboard is no longer available on the market...

Yes, it depends on the country, in some countries they do warranty stuff through the vendor you bought the board at. But as mentioned, they probably can only offer to replace the whole board, which would be way too much hassle for this little problem, so i would never do that. It's better to solve this yourself somehow.

You have to know, and i don't mean to be respectful to you in any way, but by buying a GODLIKE board model, you are being viewed by them as a "whale" (Youtube), that's not to say, a sucker they can make a lot of profit off. Yes, those boards use nice components, overkill on every level, but it doesn't make it the best board model, just the most expensive one. It's usually better to get a board that sells in bigger volumes and uses the most reasonable high-end parts (in other words, the highest board model to get would always be the ACE or UNIFY). By getting a more commonly sold board model, there will be a far bigger number of users providing bug reports and other feedback to MSI to hopefully help them sort out any issues. That's just for future reference. I would not recommend buying the most expensive board from any board maker, half if it goes straight into their pocket, and some of the rest is spent on things that don't really give you an advantage over something like an ACE model. And yes, we had disappointing problems with GODLIKE boards before, like displays not working as they should.

It's difficult to accept less than perfection for the money you paid, yes, i'm absolutely with you, regardless of how i otherwise think about the GODLIKE models. Still, if we weigh the amount of work and hassle replacing the board would cause, i would instead opt for a very pragmatic and cost-effective solution of using something like a Y-splitter-cable for a different fan header, to put two fans on the same fan curve and avoid the problematic fan header.
 
Hello and Happy New Year to all!

Sorry for the late news, I was away for a few days...

Here is the custom curve for the problematic fan connector:




-Do you think the problem is more hardware related or some kind of bug in the fan control system?
 
Oh, and the green line shows your fan speed, so it happened even in the BIOS? Ramped up quickly, then slowly stepped down again? And the System temperature (which you use as the temperature source for this fan curve) did only fluctuate slightly around 40°C, no big jump in temperature which would cause the fan to spin up. Yeah, very odd. I would probably use the solution i mentioned before, using a Y-cable to put two (ideally identical) fans on one header that works normally. The most you can try from your end is a BIOS update (which has been done) and a Clear CMOS.
 
Hello,

Indeed, the problem occurs even directly in the BIOS...

A clear CMOS solves the problem, but it occurs again when I make a lot of settings concerning the adjustment of the different fans...
 
Oh? So it could also be a BIOS bug of sorts then. I would investigate further, change one fan curve at a time or so, keep track of your changes, and once you find the change that triggers this probem, try to reproduce it again from a Clear CMOS. If you have a clear way of reproducing it, there's a clear way for MSI to fix it in a newer BIOS.
 
Hello,

After various tests it would seem that even with all the ventilation curves programmed originally, fan 7 poses the same problem from the moment the "Smart" mode is activated on fan 7.

I don't know what to think anymore (bug in the ventilation regulation system, or hardware problem)...
 
Ah. Then probably a small circuit for the smart fan control of that specific fan header is defective, and it's not just a BIOS bug. Of course, you can report it to MSI, maybe it's really just a BIOS bug. That's the problem with having a GODLIKE board, there's hardly any other users with it here on the forum, so with any weird issues, you can never be sure if it's something isolated to that individual board, or some bug instead. To me it doesn't look like a bug, but you can open a ticket with MSI regardless.

If it's not a bug, but some issue of your board, i would just live with some workaround. Don't let them RMA the whole board over this small thing.
 
Additional information:

Aida64 and iCue indicate a speed of about 15000 RPM for fan 7 while this fan 7 turns at 2200RPM maximum...

On the other hand, OCCT and MSI Center indicate the correct speed for the fan in question...

This problem is strange...
 
Hello,

I don't have a 100% "DC" fan but by setting fan 7 to "DC" mode instead of PWM, the problem encountered remains the same...

Moreover, fan 7 goes from 600 / 700RPM to + 2000RPM in less than 1 second...
 
The issue is duplicated by MSI, they are checking for this issue.
In meantime you can use SYS_FAN5 or SYS_FAN6
 
Hello,

Thanks for the information.

So it seems that the problem of this connector 7 is related to a Bug...

As an additional information, the problem of erratic operation of fan 7 occurs when controlling it from the BIOS and also when I try to control it under Windows with MSI Center.

I hope the problem will be solved soon...
 
So it seems that the problem of this connector 7 is related to a Bug...

Yes, that is the surprising thing, they could actually reproduce it. See, this is what i meant of so few people having a GODLIKE board: You can run into weird bugs like this, where usually everything would point to an issue on your specific board sample, because for sure we would've heard about a particular fan header being this buggy on a certain board model. But no, you're here discovering a new bug on your own, because there's barely any other users with it posting here. Already with something like the ACE model, this can't happen that easily two years after release.
 
Thanks for your help.

I still submitted a new ticket to MSI to learn a little more about the problem encountered and the resolution of this problem.

I am glad that this problem can be solved by a simple update, and not by a complete change of the Motherboard!

I still hope that the update won't take too long to be available.
 
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