Cpu fan

G

Guest

Guest
.h!
i have a problem .
why is that the cpu fan of mine doesn't work . ??
my mobo have 3 pin only while my cpu fan hve 4 wire
my computer really doesn'twork .
what will i do?
 

4745454b

Titan
Moderator
Try the other 3 pins on the fan? You can fit three of them on the header at a time, make sure you try it both ways. If that still doesn't work, try using a 3 pin case fan.

Bios's are setup to not allow the machine to boot if there isn't a fan attached to the CPU header. This prevents you from destroying your CPU if the fan dies.
 

aberchonbie

Distinguished
Aug 22, 2008
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actually, my motherboard allows me to boot without a fan attached to the cpu header (since I watercool) I didn't change any settings..

the 4th pin is for pwn fans meaning the motherboard can read rpm's of the fan, increasing/decreasing speed with the variances in the cpu temperature..

if you dont mind your fan running at 100% speed, you can just plug 3 pins in.. if your computer is not booting, maybe you've plugged it into the wrong place.. around the cpu socket, you can sometimes find a fan header for a fan for the northbridge or RAM cooler..

 

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