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- Fan very loud and PC will not boot up
February 19, 2007, 1:46 pm
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Re: Fan very loud and PC will not boot up
Is it possible the fan had always started up at max RPM,
only to be immediately throttled down in RPM by the
motherboard bios as the POST progresses before booting the
OS? If so, it might be that the system is halting or bios
failing to execute then precludes the throttling down of the
... or is the PSU fan entirely controlled by the PSU, no
connection to the motherboard? Most retail systems don't
control the fan externally but on an OEM system, they can do
it if they chose to.
I would suspect a PSU fault still, and check it with a
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