Goff said:Immediately after "Post", I get very loud fan noise. The system is about
a
year old using a NVidia 6600GT, AMD 3700, and there is a case fan.
Can someone tell me which fan is probably the culprit ??
Goff said:Immediately after "Post", I get very loud fan noise. The system is about
a
year old using a NVidia 6600GT, AMD 3700, and there is a case fan.
Can someone tell me which fan is probably the culprit ??
Goff said:Immediately after "Post", I get very loud fan noise. The system is about
a
year old using a NVidia 6600GT, AMD 3700, and there is a case fan.
Can someone tell me which fan is probably the culprit ??
Your diagnoses is probably correct - fans do tend to fail after a while. It
could be the CPU fan, the motherboard chipset fan, the graphics card fan,
the system exhaust fan, the PSU fan. No way for us to tell
Take the side or top off your case and turn on the system and have a
listen - you should easily be able to see which fan is failing. Come back to
us for more help if you need it, but basically find the broken/failing fan
and get it replaced as soon as possible - a component that needs a fan
shouldn't be run without one for very long at all, I'm talking maybe 10-20
seconds!
Goff said:Thanks for the quick responses. I'm not very handy and this is my primary
system. I do have "ASUS Probe" which monitors fan speeds, etc and all the
fans are working. I'll take the box in and have it fixed.
GT said:The noise is probably the fan spinning badly and about to fail. Don't be
put off by the unknown - opening the case does no harm to anything and
when you are in there you will see how simple things are - it looks scary
at first because you can see the motherboard, but its just like leggo -
everything fits in just one place. It will work perfectly well with the
lid off the case while you have a look. The only 2 fans that might be
difficult to change are the motherboard fan and the graphics card fan, so
why not just pop the lid off and have a look? A new fan would only set you
back a few pounds (or dollars), but taking it to a repair shop will set
you back loads as they will charge inspection fees, labour etc. etc.
Goff said:Immediately after "Post", I get very loud fan noise. The system is about
a
year old using a NVidia 6600GT, AMD 3700, and there is a case fan.
Can someone tell me which fan is probably the culprit ??
Much easier, and safer, to use a short rubber hose with one end by your earJust stick your finger into the fan to figure out which is causing the
noise... Just do it at the center hub of the fan and you'll be fine.
Goff said:Thanks for the quick responses. I'm not very handy and this is my primary
system. I do have "ASUS Probe" which monitors fan speeds, etc and all the
fans are working. I'll take the box in and have it fixed.
Immediately after "Post", I get very loud fan noise. The system is about a
year old using a NVidia 6600GT, AMD 3700, and there is a case fan.
Can someone tell me which fan is probably the culprit ??
My kid's system does the same thing.
He tells me it's because the driver software to throttle the fan speed is not
yet running - the sound sudenly drops a lot as Windows finishes loading.
Basically - it's normal.
Think of it as a useful confirmation that the fan is operational!
I would agree except mine will start making the noise for a short period after
running for several hours. Boot up noise always happens, later on very
sporadic.
Assuming one or more fans are kaput, can someone recommend a high quality
brand of fans to look at ?? Oh, BTW, the case is an "Ultra"
It gets stranger. After ten minutes of noise, and the "chassis" fan running atJust an update. The system has been running for five hours and the noise just
started again. Noticed the "chassis" fan speed went from 2500 down to 1800.
Not sure if this meaningful in any way.
Goff said:Just an update. The system has been running for five hours and the noise just
started again. Noticed the "chassis" fan speed went from 2500 down to 1800.
Not sure if this meaningful in any way.
Sure. If the bearing is eccentric, or sloppy, and the rotor starts to wobble,
the
RPMs would drop, and you'd hear more noise from the fan.
I press on the hub (the very center of the blade), to identify a fan
that wobbles. But you have to take the side off the case, to test
all the fans.
Since you've seen the chassis fan speed drop, now all that you need
to do, is identify which fan is connected to the "chassis" fan header
on the motherboard.
If you were thinking of touching the fan power connector, while the
system is running, I wouldn't do that. If the fan wiring needs to be
modified, shut down the system and deal with the wiring changes with
the power off. The fan header is not well designed, to prevent expensive
accidents.
Paul
Goff said:It gets stranger. After ten minutes of noise, and the "chassis" fan running at
1800rpm, it moved back up to 2600rpm and the noise went away.
First idea that would come to my mind based on the correlation of noise
to fan speed would be that the fan should be replaced _soon_. I've had
fans that would get into an odd vibration mode where they made a bit of
a "groan" and simultaneously slowed down (I have one starting that cycle
right now). I have had good luck with Antec fans, especially their 12cm
units but I don't know what size you might need. If the case is not too
old I would give a shot a complaining to the Ultra people. Sometimes a
few words on the phone or by email will get a sympathetic response and a
freebie even if the warranty is expired.
I would agree except mine will start making the noise for a short period after
running for several hours. Boot up noise always happens, later on very
sporadic.
Assuming one or more fans are kaput, can someone recommend a high quality
brand of fans to look at ?? Oh, BTW, the case is an "Ultra"
Goff said:I apologize for continuing this thread, but I pulled off the case side and
determined the CPU fan is making the noise. The fan is a standard "AMD" CPU
fan. Could someone recommend a quality fan that should last more than a
year? TIA for your time and trouble.