New heatsink fan still making noise

March 26, 2009 at 14:35:36
Specs: Win XP Pro, 2.0 P4 512 RAM
PC has been getting blue screen errors randomly after
about 10 minutes of use. Weeks later, kid noticed
loud noise coming from machine. I opened it up--full
of dust. Cleaned it out really well and found heatsink
caked with dust all around processor and fan was
making a loud noise. Just installed a brand new
Rosewill cooler (for up to 3.4 ghz) and the fan is still
making the same noise and it will not boot. Could it
be the power supply? The sound, though, is definitely
coming from the heatsink fan......??? Thanks!

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#1
March 26, 2009 at 16:12:48
Did you completely remove the old thermal paste/grease and reapply a small amount of new thermal paste/grease. The fan may be making a loud noise because it's trying to keep the cpu cool-thermal control might be enabled in the bios. If you didn't reapply thermal paste/grease(or if you applied too much), the fan is not able to keep the cpu cool enough and you're getting the blue screens. However, the blue screens could be due to something else as well-write down the error code and post here, search google, or use Event Viewer.

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#2
March 26, 2009 at 18:28:09
You have at least two fans - the cpu fan and the power supply fan.
You may have two power supply fans, and maybe a case fan too.
If the cpu fan and heatsink had mung on them, the power supply fan probably does too. If you don't have access to a compressed air source you can blow out the PS with, you will probably need to remove the PS and remove it's cover to properly clean inside the power supply. DO NOT use a vaccum cleaner - they produce a tremendous amount of static electricity and anything connected to them can discharge that.

It can be difficult to tell where a noise is actually coming from - I've been mistaken more than once - but it wouldn't be from the new fan you installed unless you bent something on it while installing it.


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#3
March 27, 2009 at 16:31:20
Thanks for the input. To answer some of your ?'s... I *did* clean off the old thermal grease and the new heatsink I installed already had a thin layer in place (Rosewill model). RE: fans.. There is a case fan but there is no HD fan--it's definitely not the case fan--it's been unplugged during this process. RE: old PSU... was definitely caked with dust. I took a newer PSU out of another machine and hooked it up... still making the noise. For the heck of it, I rebooted with the HD unplugged. No more noise! I was certain it was coming from the CPU fan. But then... I rebooted again w/HD plugged in AND the new PSU and the noise was *still* gone. Could the HD cable been loose creating the loud noise? Perhaps the HD on it's way out? Yeesh! I bought a new PSU for it anyway and the noise is still gone. Hopefully it's not the HD I'm running low on funds! Thanks for all your help.

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#4
March 27, 2009 at 16:41:10
One more thing... Just booted again with new PSU and hard
drive and the noise was there. However, it stopped once the
machine booted into XP. Now it's quiet as a mouse. Any
thoughts?

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#5
March 28, 2009 at 00:46:22
"Just installed a brand new
Rosewill cooler (for up to 3.4 ghz) and the fan is still
making the same noise...".

I don't see how your CPU fan could have been making noise, and then you replaced it and the new one makes the same noise. Or did you just replace the heatsink and reuse the old fan?


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#6
March 28, 2009 at 12:30:39
You haven't described the noise.

The usual noise you get from a fan with failing bearings is medium pitched screeching and/or low pitched rattling sounds, most likely to be heard after the computer has not been running for a while and has cooled to room temp and then is started up.

The usual noise you get from a filthy fan or any fan that is rubbing on something is according to the rpm the fan is running at and is constant or it comes and goes.

Some mboards spin the cpu fan faster when first booted, then the fan spins slower and is quieter, unless the cpu is overheating. There may be settings in the mboard's bios Setup regarding the cpu fan speed and what triggers it spinning faster. Sometimes whether it spins slower and quieter depends on a program or settings in Windows - that may not work properly if the drivers for the mboard's main chipset have not been loaded in Windows
........

"Could the HD cable been loose creating the loud noise?"

NO.

"Perhaps the HD on it's way out?"

Could be.

Usually if a hard drive is failing if you hear anything at all, it's a low piched thrashing and/or clicking sound and once it starts, it happens more and more often - it never goes away.

The only time I have heard a noise from a hard drive that came and went it was Maxtor drive of a friend's , and the sound was like a high pitched electric buzzer. That hard drive failed a short time later. We replaced it on warranty - the refurbished replacement failed a short time after another 3 years had passed.

You could test the hard drive, but it may test okay until the final stages of failure.
The mboard bios must be detecting the hard drive in order for it to be tested.

Check your hard drive with the manufacturer's diagnostics.
See the latter part of response 1 in this:
http://www.computing.net/windows95/...

(thanks to Dan Penny for this link:)
Hard Drive Diagnostics Tools and Utilities
http://www.tacktech.com/display.cfm...

If you don't have a floppy drive, you can get a CD image diagnostic utility from most hard drive manufacturer's web sites, but obviously you would need to make a burned CD, preferably a CD-R for best compatibilty, on another computer if you need to.
.........

"PC has been getting blue screen errors randomly after about 10 minutes of use. Weeks later, kid noticed loud noise coming from machine. I opened it up--full
of dust. Cleaned it out really well and found heatsink caked with dust all around...."

If the cpu frequently overheated during that timeand previous to that, it's also very possible the cpu is damaged and that's why the mboard isn't booting.

If you can't test the hard drive on this computer, test it when it's connected to another computer, but don't attempt to boot from it.


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#7
March 29, 2009 at 09:56:11
You guys are awesome. Thanks for the great
troubleshooting ideas. I mentioned in an earlier post the fan
is making the same noise. It isn't. It was a loud grinding
noise and now it's more of a rev'd up noise (?can't describe).
The sound goes away completely after the system is on for
a few minutes. So, what tubesandwires said about the mobo
spinning the fan faster at start up is the reason I hear the
sound at boot then it quiets after being powered on for a
while. I was able to boot using Knoppix and recovered all the
files off the HD onto an external USB drive. Long story short,
XP is screwed up and in a continuous loop to try and restore
itself [sigh]. Since I recovered the HD files, I will simply
reformat and do a fresh install. Thanks again for all your
help.

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#8
March 29, 2009 at 11:57:29
Did you test the subject hard drive?
If you haven't do that FIRST.
Windows does not have to be working torun the diagnostics mentioned above.
If your hard drive is failing physically, anything else you try will be a waste of your time - you need to get another hard drive first in that case.

"....it will not boot."
is NOT the same thing as
"....XP is screwed up and in a continuous loop..."

There is a big difference between the mboard doesn't boot at all and Windows won't boot properly.

BEFORE you install Windows from scratch, try this instead - it will not delete the personal stuff you have added since you got the computer or since you last loaded Windows from scratch.

You will need a Windows CD of the same version as the one of your Windows installation, and the Product Key, preferably the one that was used to install it, but it can be one for the same version as the one of your Windows installation.
In most cases you get the Product Key from the official Microsoft sticker on your computer case, or from the official Microsoft sticker that came with your Windows CD if it has not been stuck to the case, or if you can't find that or don't have that, you can use a program to find the Product Key your Windows installation is presently using, BEFORE you run the Repair Setup (Repair install) - e.g. search for: keyfinder, by Jelly Bean whatever.


How to do an XP Repair Setup, step by step:
http://www.windowsreinstall.com/win...


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