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Weirdest mobo noise issue

G

globalist

n00b
Joined
Jan 9, 2007
Messages
21
So my Gigabyte P55a-UD4 (with an i5 CPU) has died and I've got it replaced with a P55-UD3R, upgrading to an i7 CPU along the way. I did not reinstall the OS as I would lose too many settings accumulated over the years, and it wasn't even necessary - the previous OS booted fine on the new mobo.

All the other components remain the same as well, but now there's an issue - weird noise coming from the mobo. I know it is the mobo because I have swapped out all the other components and it didn't make a difference.

Now the weird part - the noise is only present once booted into my Win7 x64. I've tried Ubuntu Live and the mobo was quiet. I've also accidentally used Acronis Universal Restore (which disabled/replaced a bunch of drivers in my OS, making it not really usable and I had to restore to a previous backup) upon which my Windows booted up and the mobo was quiet again.

I thought it could be some capacitors on the mobo, but now I'm leaning more towards a software issue.

Can anyone help me troubleshoot this? Many thanks!
 
Update: the noise is only present when the CPU is in low-power state.

If I do this (as per a tomshardware thread I found on this issue):

1. Execute: "regedit"
2 .Locate: HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Power \ PowerSettings \ 54533251-82be-4824-96c1-47b60b¬740d00 \ 5d76a2ca-e8c0-402f-a133-215849¬2d58ad
3. Change Attributes from 1 to 0.
4. Then, through the control panel - power options - "processor idle disable".

The noise is gone but the CPU is not "downclocking/downvolting".

Any ideas?
 
Disable speedstep and C1 in the bios - problem fixed.

Have had Gigabyte boards all the way to the original Socket 775 965 chipset with this problem.
 
Won't that prevent my CPU from entering low-power state, just as the power option setting does?
 
globalist said:
Won't that prevent my CPU from entering low-power state, just as the power option setting does?
Click to expand...

Yep. You can always pull the board and RMA it and hope you get one that doesn't have the same problem.
 
I disabled C3/C6 power state in BIOS and it solved the issue, without affecting my CPU's ability to enter low-power state. Weird.
 
globalist said:
I disabled C3/C6 power state in BIOS and it solved the issue, without affecting my CPU's ability to enter low-power state. Weird.
Click to expand...

Yeh it's all related with those power function settings in the BIOS but speedstep and C1 is the 2 things I always disable because I did not care for power saving and wanted my CPU at full speed.

Told ya your problem will be solved.
 
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