CPU Fan Stops

[zman0023]

I have a Thermaltake CL-P0114 120mm CPU Cooler with Heatsink and some times when my computer is on it just turns off or when i turn my computer on it just doesnt turn on does anyone who why it would do that?please let me know

 

[CaptRobertApril]

I'd check the power connector to the motherboard and make sure that the wiring is not loose. Regardless, you have to take care of this pronto even if it means replacing your HSF. I don't think a Big Typhoon would be very effective as a passive cooler! 8O

 

[endyen]

Is that an AMD chip? I have heard of them doing that when cool & quiet is enabled. Just disable it in bios.

 

[CaptRobertApril]

Wow. C&Q can completely turn the fan off? Didn't know that. I dunno if I'd trust that too much!!!

 

[virtualban]

Wait, I know this one, it has happened to a computer before. The cpu fan was connected to the chasis fan outlet of the board. I spare you the instances, just know that the fan had been around for 6 months in a pretty clean environment, until winter came along, and then I was called to the resque.

 

[I]

Does this fan have an integral thermal control circuit? I mean one that is specifically, independent of motherboard control? If so, do not use, allow even the default bios settings if applicable, to thermally control the fan. Sometimes it can work ok, but a fan with it's own thermal control can be more difficult to control.

Check your bios for fan speed control, it could be that based on the settings there, your fan is doing exactly what it was supposed to do, turn off when the CPU is cooler than X degrees. The important thing is that the fan turns on again every time the temp rises enough, and that the fan ramps up in speed fairly quickly from the 0-600 RPM range, as many fans aren't stable that slow, you want it to at least try to spin at > 600RPM right away, if not higher based on temp.

Of course the other possibility is as previously mentioned, if the fan is plugged into the wrong place, but more often that wrong place always powers the fan when system is turned on, it'd only be in a power management mode that such a header might have a different turn-off function relative to the CPU fan header.