02-02-2009 11:25 AM
I have an M8200n that has the MCP61PM-HM (Nettle2) motherboard. I just swapped out the HP case with a much nicer Antec 900. I also changed out the CPU heatsink with a GlacialTech Igloo 5750.
When I connect this cooler to the CPU fan power supply on the motherboard it gives me the "CPU fan failure" notice and shuts down my computer. The fan is working properly. the only way around this that I have found is to connect small fans to the CPU fan power supply and to the System fan power supply.
Does anyone know a work around this? I can't even disable it in the bios. Is there a way to jumper the three pins on the connector on the motherboard?
02-03-2009 02:15 AM
If your going to rid yourself of the case,You might as well do the same with the motheboard. The bios is locked and there's no real workaround for the fan. You'll have to use the fan due to the settings from HP.
Oh. I'll take the case if you no longer need it.
02-03-2009 05:53 AM
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02-03-2009 07:34 AM
Yes I believe your right. the OEM fan was much smaller and the new fan is bigger but lower RPM's drawing less current. Right now I have two small 80mm fans hooked up to the power connectors but they are just hanging in the case. It makes the motherboard think it's OK and I guess it moves more air around.
I guess I'll just have to leave it this way.
02-05-2009 01:14 AM
2014 Microsoft MVP - Microsoft Windows Expert - Consumer
10-12-2011 02:25 AM
hi, im encountering same problem like this, hope you can give me ryt process how to troubleshoot, does this have something to do with my board or just a cpu fan
10-12-2011 01:03 PM
My fan wasn't bad, as it would start and run OK as long as I, or a program, didn't do a restart or shut-down. I exposed the various wire connections so I could plug/unplug, do the last resort 'wiggle-invert-bang 'em' tricks, etc. It worked for a few months until a neighborhood blackout finally foiled all tricks. I bought a p7-1080t and like it.
I suspect it was a board problem re whatever was sensing danger rather than the fan itself.
FWIW, the HP salesman was excellent. Spent a long time dicussing my operating envrionment, use pattern, etc. to try to find possible failure causes. He knew computers and was very well trained in eletrical/electronic theory. Three phone calls and about an hour of friendly and patient help.