Question about Sony VAIO PCV-RX753 PC Desktop

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Loud fan My computer was working fine, but was very dusty. So I took it apart and blew out all the dust and cleaned it real good. Put it back together and now it's louder than ever. Don't know if I damaged the fan or didn't put it back together correctly. Any advice?? Thanks

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  • locserc Feb 20, 2009

    I Have sun ultra 24 High end work station it is giving error in BIOS as CPU fan error and key board not functional.
    when we remove System fan noise is gone.so we replaced new System fan again noise is coming.still problem is there.
    we did following things.
    1.)BIOS updated
    2.)Replaced CPU fan and system Fan.
    kindly suggest any solution if any body has faced same problem.


  • A Womans Computer Man
    A Womans Computer Man May 11, 2010

    sounds like the fan is on its last stand..replace it..

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If the fan sound is very loud, there might be 2 probabilities- 1) you haven't connected it roperly- 2) the fan is losing its life- so its better to replace it as you can get it for lower prices everywhere..!!

Posted on Oct 27, 2008

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Check that the fan is not hitting any wires in side the case.

If not you may have disoriented the fins while cleaning them. Make sure the fins are not hitting the fan body.

If the fan wasn't installed property the CPU temprature should rise fast and your computer might automatically shut down to prevent damage to the CPU. If that is the case, try reinstalling it making sure it's attached well to the CPU. And remember to add some thermal compound to help the heatsink transfer heat.

If none have solved your problem you can buy a new fan for your CPU at any computer store. Make sure it's compatable with your CPU socket type.

I have lately purchased this fan for my quad core CPU and it's 100% silent. You can run it without a fan also. It's a really huge heatsink. I recommend it.
http://www.coolermaster.com/products/product.php?act=detail&id=4509

Posted on Oct 27, 2008

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1 Answer

Very Constant Noisy Fan


If this is a recent change in PC behavior, then it may be over-heating.

When was the last time you blew the dust out of the case ? This must be done 1 or 2 times a year, (more if you live in a dusty environment -- desert.)

Get a can of compressed-air, disconnect all cords, take the side off, take the tower outside, (you do NOT want to do this indoors -- trust me,) and blow it out. If there is a 'shield' on the heatsink, remove it so you can blow out between the fins there. Don't forget to blow out the Power Supply.

Tip : When the can gets cold, then the air will begin to freeze at the nozzle and it will become less effective....so STOP using it when it's cold -- you are just wasting the propellant. It is best to use TWO cans, one at a time....switching when one of them gets cold.

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A really loud fan can be one of two things - neither is very good to have for very long. Most newer motherboards support multi-speed fan operation based on CPU temperature. This keeps fan noise at a minimum because the fan only has to run fast (and loud) if the CPU exceeds a specific threshold temperature. The loud noise could also be from a fan that is starting to fail and is binding, thus running slower than normal. Either of these conditions is indicative of a problem that kills PCs - heat. Open the case and carefully examine the heat sink fins and the fan on the CPU. If they are caked with dust (especially the fins), then the CPU will likely overheat and shut down. Get some canned air designed for cleaning electronic components and blow the dust from the fins and the fan. Restart your system a see if the fan runs slower and quieter now, Machines that are in dusty environments, around smokers, or placed on the floor are especially prone to dirt buildup. Periodic cleaning with the canned air is the way to keep your PC happy and healthy.

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If you have cleaned out the dust with compressed air, then I suggest you look at the processor cooling. Is the fan running up to speed? Is the heat sink tightly in place on the processor? Feel the fins of the processor heat sink when you power it up and if they get hot your processor is most likely over heating and shutting down. If all is well at the processor, check the power supply fan to see if it is running and the only other suggestion is to try another power supply. Dust is your worst enemy in a computer.

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The fan seems to be running hard and loud. i have cleaned the system and it's running quieter since then. is that normal for the system to do?


I'm assuming that when you say you cleaned the system that you mean you removed programs, old files, viruses, etc.
If your computer is set to change fan speed based on how hot the processor or video card gets, which it probably is, then more programs and stuff running on the computer would cause your hardware to work harder, get hotter, and need more ventilation. Thus faster fan speed.
However, I believe what really happened is that dust collected on the fan(s), causing them to make some new noises and then the dust fell off because it was so heavy or it got sucked through the fan and out of the way finally. Which means it was a coincidence.
Now if you meant that you literally cleaned the computer (opened it up and blew all the "dust bunnys" out) then yeah it makes perfect sense that it would be come quiter.
By the way, if you have not opened the computer case and cleaned out all of the dust, you really really should.
Disconnect the computer from the outlet, open up the case, and using a can of compressed air (about $5) blow out all of the dust, hair, and dirt to make sure your hardware stays in good condition.

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Replace the power supply - but before that - remove every card in the machine and remove the ram too - clean the end of the ram with a pencil eraser - reinstall.
Clean the rest of the cards with a pencil eraser and reinstall.
Blow all the dust from the machine with a can of AIR - get the power supply and fans real good - put it back together and if it works - fine - if not - replace the power supply.
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