cpu fan failure, but fan works

January 21, 2010 at 19:14:06
Specs: Windows 7
Installed new phenom cpu in my hp desktop and worked fine at work. Brought it home and connected it to my monitor,keyboard, etc.,booted up a few seconds and said shutting down due to cpu fan failure, but the fan was running.

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#1
January 21, 2010 at 19:50:43
Might see if you can get to bios to view health status. Either the fan is not reporting or plugged into wrong slot or temps are shutting it down. Might be other reasons.

Playing to the angels
Les Paul (1915-2009)


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#2
January 21, 2010 at 20:18:38
Can you tell me how I could check the bios and settings if the computer shuts down in a matter of seconds?

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#3
January 21, 2010 at 20:26:04
What is the exact model number of your hp?

Like jefro said, confirm the fan is plugged into the correct motherboard header.

Unplug the fan, plug it in again and boot the machine...do you get the same message?

The yellow wire is the one that reports fan rpm to the system.

Finally, try any other fan on the cpu fan header. If the machine boots normally, shut down immediately and replace the fan on the heatsink.

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#4
January 21, 2010 at 20:32:59
The model of the cptr.is Pavilion Elite M9515 and I upgraded the Phenom x4-9850 2.5 ghz. to a Phenom II x4 965 3 ghz.

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#5
January 21, 2010 at 21:02:10
Can you press F2 when you see that error message, then get into BIOS?

This page may help...

http://h10025.www1.hp.com/ewfrf/wc/...

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#6
January 23, 2010 at 17:35:40
It would seem the CPU is overheating, did you remove the old heat transfer, be it paste, foil etc and replace it with fresh? If not then the CPU will overheat. Also, check that one of the wires on the fan plug or on the fan hasn't fractured. One wire will be supply, one ground and the other is the reference, used to tell the computer the speed the fan is running. If this wire has fractured or is intermittent, as far as the computer is concerned, the fan has stopped spinning.

Computers... designed to entertain,help with work but most of all to frustrate you!


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#7
January 23, 2010 at 20:27:22
Thanks for everybodys help.
I switched the exhaust with the cpu fan wires and it's been working very well so far. Of course I want to hook it up the correct way, if anyone has any more ideas, given this arangement I have now, I'm all ears.
Thanks Again,
Gary

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#8
January 26, 2010 at 16:01:10
I guess you are saying you reversed the fan power wires. Its quite possible they were connected incorrectly in the factory! If when the computer is running and you put your fingers to the side of the heatsink, you can feel the warm air blowing through them, not sucking cooler air past them, then that is correct. Whatever, if you have it running without any problems, then the CPU is happy... leave it like that!

Computers... designed to entertain,help with work but most of all to frustrate you!


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