• Welcome to Overclockers Forums! Join us to reply in threads, receive reduced ads, and to customize your site experience!

Asus B550-A low FWM Problem

Overclockers is supported by our readers. When you click a link to make a purchase, we may earn a commission. Learn More.

dja2k

Member
Joined
Apr 17, 2004
Location
Texas
Fans were working as they should few days ago, I did mess with some OC in the bios, nothing drastic. I have reset the bios to default just to make sure. Computer starts with fans spinning at low RPM and speed up a little inside Windows. When I start stress testing, they go even more silent practically spinning at their lowest RPM. Bios is set to Auto-PWM, didn't change anything. They don't spin faster upon reaching higher temps 60c+. Any help would really be appreciated as this is really odd behavior. 1st pic is idle, 2nd pic is Cinebench running.
 

Attachments

  • Idle.png
    Idle.png
    29.5 KB · Views: 60
  • Cinebench.png
    Cinebench.png
    30 KB · Views: 61
That is strange i would take battery out unplug let it stand 30 seconds battery back in bot up into bios set default . If that gets no where run dc could be something strange with pmw

- - - Auto-Merged Double Post - - -

Set them all to full power see if you can manual
 
I can run fans manually at full RPM and they stay that way. Don't know if its a faulty MB or CPU.

Update:
Hadn't tested since last night and now it kinda runs fine for a few secs in Multi Cinebench, then gives up and lowers the RPM's like I saw before. Really strange it looks like it runs the fans fine at lower temp and slows them down in higher temps.
 
Try the battery like I said take all power out of board clear cmos see if that does it . If not I had problem and refresh of bios did it
 
Ok I will try that next. I did notice some high temp readings at idle, don't know what those point to though.
 

Attachments

  • Temps.png
    Temps.png
    51.2 KB · Views: 27
Sorry didn't mention, but they are connected to the MB headers. Everything was working fine til I tried an manual OC and went downhill from there. There is no OC now and I saw this problem.
 
Took off battery as suggested and I think that fixed the problem. Testing now....
 
Thanks! Cinebench Single Core Max Temp 51c and Multi 62c. Seems about what I had before. Fans are behaving as they should from what I can see. Now that I hope I have that fixed, I can setup my fan curves like I had them.
 

Attachments

  • 20211211_123725.png
    20211211_123725.png
    270 KB · Views: 16
  • 20211211_130620.png
    20211211_130620.png
    218.9 KB · Views: 17
Back