Chipset fan at 100% - Reading 127C

Mike_J_Smith

Mike_J_Smith

Mike_J_Smith

Associate
Joined
25 Oct 2005
Posts
476
I've got an MSI Tomohawk x570 which has been running without issue for a few years. When I first got it, I had an issue with the chipset fan running at full speed. I can't really remember the details of what fixed it but I do recall it being a common issue.

A couple of months ago I had left my PC on for a while, came back in the room and the chipset fan was running at 100%. I turned off and on again, and all was good. Now this has happened twice in the last two days. Restarting alone doesn't fix it and the BIOS, MSI Center and HWMonitor all tell me that the chipset is running at 127C, which is obviously wrong.

Any ideas on how to fix this? Worst case I guess would be to disconnect the fan as since I fixed the problem initially, I don't think I've ever heard it spin up. Or maybe I could hook the fan up some way to a fan header, either motherboard or Aquasuite controlled and then I could run it at a nominal (quiet) value? Or could a software fix do the job, maybe a BIOS update?

The noise is very annoying with the fan at 100%!
 
Start by clearing the CMOS. Then if that doesn't work either update the BIOS or, if you're already running the latest version, reflash it.

127C is usually the reading you see when the sensor is dead. If reflashing/updating doesn't change it, you will have to RMA the board or unplug the fan and live with it.
 
Man, I wish I hadn't have done a BIOS update :(

It now won't boot and is giving a GPU error and now I remember I made a whole freaking post about BIOS updates and how this went wrong last time because I've got my GPU on a riser cable. Last time I had an old GPU that I could put in and reset the PCI to 3.0. Now I have no spare and everything is under custom watercooling - AAAAAAGGGGGHHHHHH! Poop. I guess the loop could do with being drained and cleaned anyway :rolleyes:
 
And I'm back! Phew! I was able to reach round the back of the card, disconnect the PCI cable and slot it into the lower PCI slot, which as luck would have it must run at a different setting from the main one. That allowed me to get into BIOS and set the main PCI slot to PCI 3. Disaster averted!
 
Mike_J_Smith said:
And I'm back! Phew! I was able to reach round the back of the card, disconnect the PCI cable and slot it into the lower PCI slot, which as luck would have it must run at a different setting from the main one. That allowed me to get into BIOS and set the main PCI slot to PCI 3. Disaster averted!
Click to expand...

Disaster successfully averted!

Now, does it still read 127C? That's what I want to know.
 
Mike_J_Smith said:
It now won't boot and is giving a GPU error and now I remember I made a whole freaking post about BIOS updates and how this went wrong last time because I've got my GPU on a riser cable. Last time I had an old GPU that I could put in and reset the PCI to 3.0. Now I have no spare and everything is under custom watercooling - AAAAAAGGGGGHHHHHH! Poop. I guess the loop could do with being drained and cleaned anyway :rolleyes:
Click to expand...
There's a reason I always get the chips with a built in GPU, and just disable the onboard gpu in bios :D

I always have a backup gpu though.
 
Last edited:
arknor said:
There's a reason I always get the chips with a built in GPU, and just disable the onboard gpu in bios :D

I always have a backup gpu though.
Click to expand...
I have done that with previous CPUs, but went without it this time. I think maybe there were less options with the inbuilt graphics when I built this PC.
 
You must log in or register to reply here.
Back
Top Bottom