Question about Dell Dimension 5150 (DIM515MIN) PC Desktop

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Loud CPU fan

CPU fan suddenly got very loud. The machine has been quiet for a couple of years. At first it showed error light # 3&4 - & on shutting down, wouldn't restart. So I went out and changed the memory stick. It's now turning on fine now but the fan is still excessively loud. Any ideas?

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Check your cables. it may be in the way of the fan's fins. also clean your fan for dust.

Posted on Sep 16, 2007


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Posted on Jan 02, 2017


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Acre z5700 turns off

A really loud fan can be one of two things - neither is very good to have for very long. Most newer motherboards support multi-speed fan operation based on CPU temperature. This keeps fan noise at a minimum because the fan only has to run fast (and loud) if the CPU exceeds a specific threshold temperature. The loud noise could also be from a fan that is starting to fail and is binding, thus running slower than normal. Either of these conditions is indicative of a problem that kills PCs - heat. Open the case and carefully examine the heat sink fins and the fan on the CPU. If they are caked with dust (especially the fins), then the CPU will likely overheat and shut down. Get some canned air designed for cleaning electronic components and blow the dust from the fins and the fan. Restart your system a see if the fan runs slower and quieter now, Machines that are in dusty environments, around smokers, or placed on the floor are especially prone to dirt buildup. Periodic cleaning with the canned air is the way to keep your PC happy and healthy.

Dec 10, 2013 | Acer Computers & Internet

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Running an Acer Aspire ax5900. The video card fan vibrates loudly for the first 10 minutes of startup. I'm told I need a new video card. Area is clean and dust free. Where is the best place to find a...

Your Acer Aspire, like any other desktop computer system, contains fans inside the case to help vent the heat generated by the internal components.
These fans generally operate quietly and reliably, working in the background to prevent your computer from overheating.
A fan that sounds excessively loud could indicate a problem such as overheating or loose internal components, or it could simply be a normally loud fan.
The key to differentiating between the two involves looking for additional clues from your computer.
Normal Operation
Due to computer configuration and build quality, the fans in some desktops sound louder than others.
Depending on what other brands of computers you've owned or have had experience with, the fan in the Acer may sound louder, when it's actually functioning perfectly.
The fan will run to keep the inside of the computer from overheating, so periodic runs are normal. If the fan runs for long periods or very often, you may have a deeper problem.

Fan Damage and Overheating
A fan can sound loud due to damage, such as broken blades or to a build-up of dirt that impedes normal operation.
This dirt, as well as normal wear and usage, can wear away the lubricant coating on the fan's internal shaft, causing the blades to make excessive noise as they turn. In many cases, a loud fan indicates that the computer is overheating, causing the fan to run more often than usual to try and cool the system.
Depending on the types of components and upgrades within your Acer computer, your current fan may be too small and weak to handle the heat output, and require upgrading to a larger, more powerful fan.

Troubleshooting Take note of when the fan turns on and how long it runs to determine any distinct patterns, whether if it occurs only during certain processes or programs.
Your computer's CPU generates a large amount of heat while in operation, so programs that require large amounts of CPU usage may trigger the fan more often.
Watch for additional signs of overheating, such as sudden shutdowns or computer crashes. Check inside the case for signs of other components touching the fan and causing vibration noise.


Do not overtax the CPU by opening numerous processor-intensive programs at once.
Check that all screws, cards and wires are securely fastened and away from the fan.
Keep your computer clean inside and out, to prevent the build-up of dirt on the fan blades or air vents and minimize the threat of overheating.
Apply a drop of oil to your fan's shaft to give it proper lubrication and smooth, quiet rotation of the blades.

Aug 06, 2013 | Computers & Internet

1 Answer

How fix Loud g4 Hard Drives

Not sure what you mean by loud Hard Drives. Hard drives are so quiet you can barely hear them. If they are loud the only cure is replacement. However, I have never heard a hard drive that I would consider 'loud' in all my years in computing./ As you show a mirror fronted mac in your question - I think you may mean loud 'Fans'. This mac was notorious for its loud fans. They can be replaced, but I seem to remember a firmware fix from Apple to slow them down - or it may have been a 3rd party utility.

Apr 01, 2012 | Apple Power Mac G4 Desktop

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Toshiba TP50G90, makes a loud popping sound then shuts off. red light flashes

it sounds like its over heating.clean all the fans ,put new artic paste on the cpu

Jan 25, 2018 | Toshiba TP50G90 50" Rear Projection...

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My HP Laptop suddenly started showing vertical stripes around once a week and could use it anymore until I turned it off. on rebooting, I would hear a couple of loud beeps but the PC will not boot....

There are a couple thing youcould have been looking at. number one a virus(trojan) got into you machine.

Number two you mother board is starting to go.

Number three your video card located on the mother board is gouing bad.

Number four you hard drive is getting weak

The fan on a laptop always runs to keep the machine cool. Smaller spaces get hotter faster.

I think based on your decription it was a virus, make sure you protected. Back up all ou info just incase it is the hard frive is startig to fail.

Oct 09, 2009 | HP Pavilion dv2700t Notebook

2 Answers

Fan is loud

well if its not attached to the motherboard in any place, for example the heat sync, or the cpu, then you can remove the fan, any other place, you shouldnt replace it because the mother board sets the fan at a certain rpm, and which would sound loud with any fan. I know this because i replaced the fan on my sony computer, and on a generic motherboard, and it was quiet, but when i put it on my sony computer, it was loud, so if you want to replace your fan, i suggest liquid cooling, it is completely quiet, and keeps your cpu much cooler than a fan. Best of luck.

Jul 04, 2009 | Computers & Internet

2 Answers

Asus M2N-E SLI

In my experience, there are some fans that are loud. It could be bad bushings or possibly a fan that is out of balance. The Cool and Quiet utility will not solve that problem.
Are you sure it's the CPU fan?
If the computer (or it's parts) are less than a year old, they should be under warranty.
If it's the case fan, I'd replace it with either a new single-speed fan or one that has a variable speed adjustment.

Apr 06, 2009 | ASUS M2N-E SLI (M2N-E SLI GREEN)...

4 Answers

My Emachine Fan Way to Loud

... this may be worth a try; it worked for my noisy emachine fan.
First open the box and vacuum out any dust on the fan. I also opened my power supply and did the same; there was quite a bit of dust, so you can imagine the heat never got the chance to be removed. Also, on my machine, underneath the CPU fan, there's a metal baffle; get the dust out of this as well ... same problem re. removing the heat. Last... and I'm not sure this matters or is true, but, for my fan, the power supply plug on the motherboard seemed to accept the plug oriented 180 degrees different from the way it was plugged in from the factory ... could this change the direction the fan blows? It certainly explains the bizarre build-up of dust in my CPU baffle. Once I did this, the fan goes up to 100 percent for about 3 seconds on boot, then it has never 'noised-up' like it used to! ... it's totally quiet now and the computer works great...
good luck

Dec 20, 2008 | E-Machines eMachines T3830 PC Desktop

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My Emachine T5212 has a loud fan constantly running

sounds like a fan is going out .. with the case open can you identify which fan is making the noise?

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Emachine T3508 Loud Loud Loud

The only sure way to quiet it down is to replace the hard drives with newer ones, that you have selected based on their noise rating, AND to replace all the fans in the machine with fans that you have selected based on their noise rating. I did this for my self-built machine last year and never regretted spending the money on new drives and new fans. It's SO much quieter! ;)

Aug 04, 2007 | E-Machines eMachines Desktop PC

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