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Processor fan is very noisy from start up to all the time I am on line.

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Hi,

Good day , you may need to power-off her PC, open it up, and give it a good cleaning with a vacuum cleaner. If possible, after you've got her PC open, and before you clean it, turn it back on so you can figure out which fan is causing the noise problem (many PCs have more than one fan). If it's the CPU fan, then you're going to want someone who is comfortable and experienced with removing it and replacing it with a new one, because it is EXTREMELY important to get 100% physical contact between the CPU chip itself and the cooling fan/housing that is attached to it, or the CPU is going to overheat and destroy itself within seconds of being turned back on. If the noise turns out to be from a normal case cooling fan (3-5 inches across), you can try cleaning it really well to remove any dust, and see if that fixes the problem. If not, you can buy a replacement fan of the appropriate size at pretty much any PC store for $5-$20. It takes 5-10 minutes to unscrew the old fan and install the new one, and just use the same electric wire from the old fan for the new fan.
If the noise turns out to be from the computer's power supply, you cannot repair it, so it needs to be replaced. I would recommend either replacing it yourself, or having someone who has done it before replace it for you. There's usually only 4 screws that hold the entire power supply box in the case, and then you also have to unplug the power cords that go from the power supply to the hard drives, floppy drive, CD drive, other internal peripherals, motherboard, and fans. Carefully remove the entire power supply box from the PC case, being careful to not scrape it or bang it against any of the memory cards or other internal components. Take the noisy power supply with you to a discount computer store and find a new power supply that's the same physical size and at least as many watts as the current one (usually 350-500 watts). If you go with a generic power supply, it will probably cost around $30. If you go with a name brand, high-wattage power supply, it can cost $100 or more. Hope this information help you in resolving your issue. Have a great day.

Posted on May 23, 2011

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If you don't deal with a noisy fan promptly, your computer's processor could overheat and cause significant damage to your motherboard as a result.

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http://www.kitchentablecomputers.com/static.php - rules
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Hi,

It is normal for the fan to kick in to cool the processor, but it sounds to me like the CPU fan and the air vents need a good cleaning.

Noisy fans and them running for a length of time means that its having to be on more to keep the processor cool.
Other causes of the fan being loud and on constantly is gaming and heavy programs. The more the processor has to work the hotter it will get, thus the fan being on all the time.

Have a look at your air vents and the CPU fan for dust. If you see any dust then you will need a can of compressed air to blast through the vents and CPU fan blades free of dust.

Removing the dust from the machine usually quietens them down.






Regards.

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