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How to adjust my computer fan - Computers & Internet

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This is one program, http://www.almico.com/speedfan.php

Would like to state though, be sure the fan in question isn't spinning at a high rate, due to a fault within the computer.

1) Computer is dirty inside.

A) Fan for the Processor, and Heatsink on the Processor, are dirty, causing the Processor fan to operate at a high rate.

[Some computers have a fan mounted directly on top of the Heatsink, sitting on the Processor.
Some computers use a computer case fan to push air through a plastic shroud, which envelopes the Heatsink.

Typical Fan/Heatsink combo,

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3451342&CatId=493 ]

Computer unplugged from power, Anti-Static Precautions taken, use a can of compressed air, (Or two if needed), to clean the inside of the computer.
Don't forget to clean the inside of the Power Supply.

[Using the plastic 'straw' provided, (Should be used at all times), insert the straw into the ventilation holes of the Power Supply's case.

Suggest starting with a hole located towards the top of the Power Supply's case, and directing the air flow towards side to side, and top to bottom.
Then move towards the bottom ventilation holes.

Come towards the back of the Power Supply, and clean the Fan's blades, and center hub. Also the surrounding shroud around the fan's blades.

If you find heavy 'gunk', (Dirt, dust, etc.), that the compressed air won't remove, suggest you use Q-tips.
You don't have to remove the 'gunk' with the Q-tips, just 'disturb the surface' of the gunk with them.
Then follow with air.

2) Thermal paste in-between the top of the Processor's case, and the bottom of the Heatsink, has dried up, or partially dried up.

Another situation that causes the Processor to overreach it's thermal limit, and cause the Processor fan to operate at full speed.

Computer unplugged from power, Anti-Static Precautions heeded carefully, the top of the Processor's case, and the bottom of the Heatsink are cleaned THOROUGHLY, and then new, fresh thermal paste is correctly applied.

3) Some fans have four wires.

A) One for the Positive connection,
B) One for the Ground, (Negative) connection,
C) One for the sensor that monitors the RPM, (Revolutions Per Minute) of the fan,
D) And the last wire is a sensor wire, that allows the computer to vary the RPM's of the fan's speed, as needed.

Ensure that the connection of all four wires is tight, and especially the sensor wire connection. A loose connection will cause an out of control fan speed.

Some programs, such as an intensive game, will cause computer case fan/s, and a Processor fan, to operate at high speed.
A necessary thing to keep the Processor from overheating.

For any questions you may have regarding what I have stated above, please post in a Comment.
Would appreciate hearing back from you.

Posted on Sep 15, 2010

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