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Dell Precision 690 fan running super high?


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#1 mystic12

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Posted 10 April 2018 - 12:58 PM

Guys, the owner used a can of compressed air to clean the inside of this old monster machine which had come originally with XP and not the fan is running at super high speed, any fixes please?



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#2 The-Toolman

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Posted 10 April 2018 - 02:39 PM

Go into the bios usually F2 on Dell and set to default settings.

While in bios see if fan still runs high rpm and if not than this may point to a problem with OS or other software problem.

 

If running a Windows OS open task manger and see if any program is running which is requiring high processor usage which can cause the fan to ramp to full speed.

 

Although doubtful go ahead and run a full Virus scan and also full scan with Malware-bytes to make certain no Virus or Malware could be causing this.

 

On a computer that age you might also have failed motherboard components as bloated or swollen capacitors so take a look.

 

Turn off the computer and unplug the fan and plug it back in and see if that changes anything although doubtful worth doing imo.


Edited by The-Toolman, 10 April 2018 - 02:40 PM.

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#3 mystic12

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Posted 11 April 2018 - 11:04 AM

Thanks for all the info, I put the side cover back on, restarted and the fan speed is now normal??



#4 mystic12

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Posted 11 April 2018 - 11:51 AM

Also, the sound wasn't working so the owner had installed a PCI soundcard but that too is not working. Both options drivers are installed and show ok in the DM.

 

 

I attached a USB audio adapter which works but very faintly, I am not understanding why the USB sound doesn't work properly?






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