Having problems with your Dell (6F858) Cooling Fan ?

2500 dell inspiron fails to boot when new fan comes on

\015 Installed new fan on 2500 dell inspiron and when it is boot up mode it turns off when the fan comes on at high speed.\015

Answers :

You are drawing too much current from the power supply with the current hungry fan.Try using a different fan that draws less power on start up. Or use a limiter to lower the input voltage draw on start up. These are usually found in fan speed controls You could also use a voltage dropping adaptor like the one use to quite fans down . They drop the 12 volt voltage to 7 volts by connecting the two voltages usually found on the power connector 12v and 5v and and adding them together getting a 7 volt output. You can also try connecting the fan directly to the power supply and avoid using the motherboard connector.The problem with this is you will not get use of the speed controling sensors used in the motherboard connections. Hope this helps you with your problem.
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