dell optiplex 745 loud fan noise

May 9, 2016 at 09:33:29
Specs: Windows 7, 2gbram core2duo
dell optiplex 745 loud fan noise, some times at start up, make so much noise and never get video, other times, start up fine, but when i go to youtube, is making to much noise

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May 9, 2016 at 09:35:13
Is it the case fan that you're having trouble with? If so, you can either disconnect it from the MOBO, or buy a new one and replace it.

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May 9, 2016 at 11:01:23
Hi Yol, when a fan becomes noisy, if there is nothing stuck inside, it should be replaced.

I do not think it should just be disconnected as it is there for a purpose - to help cooling.

Generally fans are a standard size and thus inexpensive.

Are you able to find which fan is the noisy one?

How old is the pc?

Good Luck - Keep us posted.

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May 9, 2016 at 14:19:15
Already clean it, and changed the fan, but is the same problem, even her fan, is working properly in another similar computer,

What else??

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May 9, 2016 at 19:00:11

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May 9, 2016 at 20:20:59
If you changed the fan but still get the noise then either the new one wasn't installed correctly, something is rubbing against the blades or it's a different fan that's making the noise.

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