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Asus B550-A low FWM Problem

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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.
 

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spiritedandy

Premium Member
Joined
Apr 12, 2003
Location
Middlesbrough
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

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Set them all to full power see if you can manual
 
OP
dja2k

dja2k

Member
Joined
Apr 17, 2004
Location
Texas
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.
 

spiritedandy

Premium Member
Joined
Apr 12, 2003
Location
Middlesbrough
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
 
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dja2k

dja2k

Member
Joined
Apr 17, 2004
Location
Texas
Ok I will try that next. I did notice some high temp readings at idle, don't know what those point to though.
 

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dja2k

dja2k

Member
Joined
Apr 17, 2004
Location
Texas
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.
 
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dja2k

dja2k

Member
Joined
Apr 17, 2004
Location
Texas
Took off battery as suggested and I think that fixed the problem. Testing now....
 
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dja2k

dja2k

Member
Joined
Apr 17, 2004
Location
Texas
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.
 

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