Jump to content

Welcome to Geeks to Go - Register now for FREE

Geeks To Go is a helpful hub, where thousands of volunteer geeks quickly serve friendly answers and support. Check out the forums and get free advice from the experts. Register now to gain access to all of our features, it's FREE and only takes one minute. Once registered and logged in, you will be able to create topics, post replies to existing threads, give reputation to your fellow members, get your own private messenger, post status updates, manage your profile and so much more.

Create Account How it Works
Photo

AUX/Chassis fan's slow and loud on startup


  • Please log in to reply

#1
Dbcw

Dbcw

    New Member

  • Member
  • Pip
  • 6 posts
Every morning when I turn my computer on (after its been off for 8 or more hours) my fan that's located below the disk drive, i think the AUX? And my secondary chassis fan both sound like a tanker truck and slow down continuously until they stop moving completely. Even then I can hear a grinding noise coming from both fans as if it's still trying to move. I have cleaned all the dust out and made sure there's nothing getting stuck or blocking. The secondary chassis fan is a PWM fan. Which is plugged into the motherboard. I have to wait until I get to the desktop. Then I literally tap 4-5 times where my chassis fans are with my finger and everything goes back to normal. I don't have any programs on my PC changing my fan speed, no malware, no viruses. My BIOS says my fan speeds are on high. But my bios doesn't read the AUX fan. And my Power Supply is sufficient enough to withstand the voltages.

Motherboard: P8H61-M LX2 Intel sandybridge

CPU: Intel core i5-2500k CPU @ 3.30GHz

This fan problem happened 2 years AFTER I got the secondary chassis fan, I have had no hardware upgrades since.
Could my drivers be out of date?

This is why you guys are here :S

Edited by Dbcw, 19 March 2014 - 09:32 AM.

  • 0

Advertisements


#2
phillpower2

phillpower2

    Tech Staff

  • Technician
  • 20,006 posts
:welcome: Dbcw

The grinding noise could be the bearings on one or more of the fans.

You say that your PSU is sufficient but is it a quality brand.

Post the brand and model name or number of the PSU and let us know if you are using the MBs integrated video chip or an add on video card.

How many HDDs do you have.
  • 1

#3
Dbcw

Dbcw

    New Member

  • Topic Starter
  • Member
  • Pip
  • 6 posts
PSU: ATX cp600w

Graphics: AMD Radeon HD 6670 external

HDD: 1T sata


I found out it's the graphics card fan that makes a slow grinding noise, and as a result the chassis fan gets slowed.
  • 0

#4
phillpower2

phillpower2

    Tech Staff

  • Technician
  • 20,006 posts
Is the PSU here the same brand and model as the one that you have.

I found out it's the graphics card fan that makes a slow grinding noise, and as a result the chassis fan gets slowed.

Not sure how the graphics card fan grinding would slow the chassis fan down, if anything the chassis fan should speed up due to the video card not using as much power, if the PSU is not producing enough power output both fans would slow down.

A good quality brand 400W PSU with at least 18 amps on the +12V rail is adequate for your video card but a poor quality 600W PSU is not.

Download Speedfan and install it. Once it's installed, run the program and post here the information it shows.
The information I want you to post is the stuff that is circled in the example picture I have attached.
If you are running on a vista machine, please go to where you installed the program and run the program as administrator.

Posted Image
(this is a screenshot from a vista machine)

To capture and post a screenshot;
Click on the ALT key + PRT SCR key..its on the top row..right hand side..now click on start...all programs...accessories...paint....left click in the white area ...press CTRL + V...click on file...click on save...save it to your desktop...name it something related to the screen your capturing... BE SURE TO SAVE IT AS A .JPG ...otherwise it may be to big to upload... then after typing in any response you have... click on browse...desktop...find the screenshot..select it and click on the upload button...then on the lower left...after it says upload successful...click on add reply like you normally would.

Depending on the results we may need to run further software for comparison http://www.cpuid.com.../hwmonitor.html

Screenshot instructions are provided to assist those that may read this topic but are not yet aware of the “how to”.
  • 1

#5
Dbcw

Dbcw

    New Member

  • Topic Starter
  • Member
  • Pip
  • 6 posts
http://imgur.com/rza58pu
  • 0

#6
phillpower2

phillpower2

    Tech Staff

  • Technician
  • 20,006 posts
The Speedfan readings are rather erratic so please run HWMonitor and again post a screenshot.

I also asked;

Is the PSU here the same brand and model as the one that you have.

Can you answer this please.
  • 0

#7
Dbcw

Dbcw

    New Member

  • Topic Starter
  • Member
  • Pip
  • 6 posts
Yes that is my PSU.


Posted Image


Posted Image

Edited by Dbcw, 21 March 2014 - 08:02 PM.

  • 0

#8
phillpower2

phillpower2

    Tech Staff

  • Technician
  • 20,006 posts
Re the quality of the PSU for future reference;

Please note that there is one thing that is possibly worse than using a known poor quality brand of PSU and that is using one that is unheard of, for brands of PSU to trust and brands to avoid please refer to the attached links http://www.10stripe....d/psu/brand.php and http://www.pcmech.co...ad.php?t=208143

PSU database http://www.realhardt...vos/Page541.htm

The temps and voltages that are showing are fine but you do need to check the +5V and +12V rails in the BIOS, see the attachment below for what they should be, can you make a note of them and post them with your next reply.

NB: BIOS voltage readings.
The readings are not conclusive in the BIOS as the computer is under the least amount of load, if they are higher or lower than what they should be though it does suggest a PSU problem.

Are you ok with working inside the computer case.
  • 0

#9
Dbcw

Dbcw

    New Member

  • Topic Starter
  • Member
  • Pip
  • 6 posts
My 5v is steady at 5v and my 12v rail is staying 12 volts...It seems speed fan lied to me with the voltage readings.

I found the grinding fan noise issue. My secondary chassis fan which I found out is a standard 4 pin connector to my power supply was not receiving enough power. After i unplugged the fan and rebooted things where all fine. So i'm assuming the chassis fan is defective (what do you get for 5 dollars)
  • 0

#10
phillpower2

phillpower2

    Tech Staff

  • Technician
  • 20,006 posts
Speedfan does sometimes report anomolous readings and they are often due to the MBs own monitoring software conflicting, do remember what I said though about the computer not being under load in the BIOS.

An example fan here
You will need to measure the present fan before ordering.
  • 0






Similar Topics

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users

As Featured On:

Microsoft Yahoo BBC MSN PC Magazine Washington Post HP