Computer makes whirring sound during bootup

January 13, 2015 at 04:33:07
Specs: Windows 7, And Zambezi quad core 3.8, corsair vengeance 16Gb of ram
Whenever I turn on my PC it starts to make a high pitch whirring sound, it always stops after a few seconds but starts every time, without fail when I boot up? Could it just be one of the case fans loose or is there something worse I should be looking for?

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#1
January 13, 2015 at 05:12:05
I suspect it is just the fans running at full speed initially. My PCs do the same; most of the time the fans run at a reduced speed.

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#2
January 13, 2015 at 08:14:34
Might be that the fan bearings are dry. If you feel daring you can often remove the label and put one drop of thin oil on the bearing.

Always pop back and let us know the outcome - thanks


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#3
January 13, 2015 at 10:39:54
It might be the fans running at max speed, next time I boot up my PC I'll reduce the fan speed and see if it stops, or at least isn't as loud
.

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Related Solutions

#4
January 13, 2015 at 13:52:31
If the fan speed is controlled by a mechanical switch, you
will notice the change immediately. If the speed is controlled
by the motherboard and/or BIOS, then you'll get the behavior
you describe: The fans start at full speed and drop to the
speed set by the system after about two seconds.

-- Jeff, in Minneapolis


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#5
January 13, 2015 at 21:35:27
Since it's only for a few seconds I'd think it's due to the initial startup speed. I think it takes a few seconds for the bios to take over. Although if it's more noticable than before it could be bearings.

One of mine always starts up noisy. It continues for several minutes before quieting down. I know it's one of the cooling fans but I just haven't gotten around to opening the case and replacing it.


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