Just bought a pre-built gaming computer, CPU fan running at 4000+rpm

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nt0521

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Dec 7, 2015
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Any help would be appreciated. I just bought a pre-built PC during cyber monday. The CPU fan gets really loud. As soon as you turn it on, the fan starts to get pretty loud. After reading some forums around here, I installed SpeedFan, screen shot of it below. I had already tried the BIOS settings and all the those automatic fan options are already enabled. I'm a newbie and dont know too much about building, hence the reason i bought a pre-built so any help would be appreciated.

http://imgur.com/lf6ZxfN

http://www.newegg.com/Product/Product.aspx?Item=N82E16883102103&cm_re=abs_gaming-_-83-102-103-_-Product
 
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xShadow6208

xShadow6208

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Sep 19, 2015
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It may just be the fans that are installed into the PC itself. Replacing them with a better or different brand may help. You can also contact the manufacturer of the fans if you know which brand they are, they'll probably be able to help more.

Good luck!
 
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jediTT

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Feb 8, 2014
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Does it stay loud or just during boot up? What are your CPU temps? Maybe there's an overheating problem and its spinning high trying to keep things cool.
 
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nt0521

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Dec 7, 2015
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It is constantly above 4000+rpm form start up. I posted a picture of some temperatures above from SpeedFan, or would there be another place to find them?

 
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nt0521

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Dec 7, 2015
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Alright, i figured out that it is not the CPU fan running high, it is a led fan in the front of the tower. Thank you for your time everyone, if you can also help me with fixes that fan then it would be much appreciated.
 
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bystander

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Dec 9, 2009
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I also question the direction the HSF is facing. There is a PSU above it, and a GPU below, and a fan to the side of the HSF that should be an exhaust. I'd think pointing it towards that exhaust fan would work better as well. Right now you are sucking in the heat of the GPU and sending it into the PSU.

And while you are at it, you might try to tidy up the cable management if you can. You don't want a bunch of cables blocking air flow from the front to the CPU.
 
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nt0521

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Dec 7, 2015
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I just realized all together that it is the power supply fan making all the noise. All day today i kept trying to narrow down the fan that was causing the noise. It is the power supply fan.
 
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bystander

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Dec 9, 2009
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That could be a result of the HSF direction. All the heat from the GPU and CPU is being blown at the PSU and it is working hard to manage all that heat. It could also be a cheap PSU.
 
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ohiou_grad_2006

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Dec 3, 2011
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I don't like ratings of that psu to start with. Multiple 12 volt rails. For a gaming build I always like a single, large 12 volt rail. On systems I've used power supplies with multiple rails it seems like more of those seem to be prone to shut down not getting enough power or getting dirty power.

I recently worked on a system for a guy recently that actually had a fried cpu related to I think a power supply not giving good power. Had to start upping the voltage just to run stock with the old power supply, by the time I got to work with it again, cpu was gone(would not even load a Linux os), replaced that and power supply and all was happy again.

If you were looking for a reasonably priced alternative, I like the evga 600b, the corsair builder series are ok for the money also. You may also try to flip the cpu cooler so that it pulls air out the back of the case instead of through the power supply.
 
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