Question about PC Desktops
It will be the CPU cooling fan.
You need to replace it soon as you can overheat and fry chips if it fails.
There is a lot of choice, but go for a middle range one if unsure.
Replacement is straightforward, but you MUST use correct earthing / antistatic procedures! - Buy an earthing wriststrap to replace the fan.
Hope this solves the problem for you.
Posted on Jun 19, 2008
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Mar 17, 2015 | PC Desktops
The CPU fan is what keeps the processor of your computer cool while the machine is running. A noisy fan on the CPU can be very annoying for users of the computer. However, it can also be a sign of a dangerous problem in your system. If the CPU fan is making noise, it is probably not running at full capacity to cool the processor, which leaves your computer open to problems involving overheating of the processor. An overheated processor can be permanently damaged.
Unplug the computer from the wall. Remove all devices from the back of the computer and move them away from the area where you will be working. Either wear an anti-static wristband or discharge any static by touching a metal part of the computer case.
Remove the screws from the back of the computer case with a screwdriver. Pull the sides of the case off and set them aside. Lay the computer on its side so that you can easily see the motherboard and all parts connected to it. Locate the CPU fan; it will look similar to the image in the introduction.
Ensure that no cables are hanging low and touching the blades of the CPU fan. Move any cables or other parts that could be hitting the blades of the fan causing noise. Tuck these cables and wires into an area where they cannot interfere with the CPU fan.
Use a cotton swab to remove any dust that you can from the blades of the CPU fan. Don't use any harsh solvents or other cleaners that could drip down and damage the processor through the fan.
Spray the compressed air into the fan to move the loose dust away from the processor fan. Move the dust into an empty section of the case with the canned air. Don't spray the air too hard or else you can spread the dust into other places in the computer.
Use the vacuum cleaner to vacuum up the dust that you moved away from the CPU. Place a crevice tool or other attachment onto the hose to reduce the size of the opening and help ensure that you only remove dust.
Replace the computer case. Plug the computer and all devices back in. Boot up the computer and check for reduced CPU fan noise.
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