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Windows 7: Racing fan(s)

19 Jan 2013   #1
gogreen

Windows 7 Home Premium x64 SP 1
 
 
Racing fan(s)

Just noticed this problem. Sometimes the CPU fan races when I'm running certain programs--mainly playback with a music notation program and VST samples. I opened the computer case and cleaned the chassis fan and processor fan. They didn't seem to have a lot of dust on them, but perhaps a little there means a lot. The computer is about 2.5 years old. Attached is Speccy's temperature reading and my CPU resource monitor when the music program is running. Any idea what's happening? Thanks.




Attached Thumbnails
-speccy.png   -cpu.png  
My System SpecsSystem Spec
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19 Jan 2013   #2
pbcopter

Windows 7 Ultimate x64 SP1, Windows 8.1 Pro x64
 
 

Your CPU temperature is hot, especially when you are at idle.
Is the CPU heatsink/cooler still firmly attached?
My System SpecsSystem Spec
19 Jan 2013   #3
gogreen

Windows 7 Home Premium x64 SP 1
 
 

What should the CPU heatsink/cooler temperature be?

Yes, it's firmly attached. Dell uses what they call "fastner" caps--odd things, but after loosening them and changing my mind about removing the fan to clean it, I re-fastened it. Perhaps I should remove it and vacuum it?
My System SpecsSystem Spec
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19 Jan 2013   #4
pbcopter

Windows 7 Ultimate x64 SP1, Windows 8.1 Pro x64
 
 

What is a good CPU temperature at idle depends on a number of things but somewhere around 105 F (40 C). Yours is 172 F (77 C).

With that temperature, I am not surprised that the fan is running fast.

Did you loosened the cooler from the CPU or just the fan?

I would also check the CPU temperature in the BIOS. It is usually the most accurate.
My System SpecsSystem Spec
19 Jan 2013   #5
gogreen

Windows 7 Home Premium x64 SP 1
 
 

105 F? Yeah, I'm nowhere near that. I removed the fan and cooler to inspect it. It's a bear to get back on, but I think I put it back firmly. Is there supposed to be layer of grease between the CPU top and the bottom of the fan? I noticed a thin layer of hard, caked, almost powdery stuff there. Could this be affecting the sensing and regulation of the temperature?

When I restarted, the computer now runs for a minute or so and then crashes--totally, as if someone cut the power.

Just restarted after a rest and got into Speccy. It now reports the CPU temperature as 211 F!

Could this new going dead, high temperature, and the racing fan suggest that my hard drive is failing (has failed)?
My System SpecsSystem Spec
19 Jan 2013   #6
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

First off you are running hot. Please post all temp in (C) not (F).
Any time you remove a cpu cooler you need to remove all the old thermo past and install new thermo paste. Take a read through this.
http://www.arcticsilver.com/pdf/appm..._line_v1.1.pdf
Don't
use your computer until your properly clean and install the proper thermo compound (paste) in the proper fashion and install the cooler properly.
My System SpecsSystem Spec
19 Jan 2013   #7
cmmtch

Windows 7 Home Premium x64 SP1
 
 

Quote   Quote: Originally Posted by gogreen View Post
105 F? Yeah, I'm nowhere near that. I removed the fan and cooler to inspect it. It's a bear to get back on, but I think I put it back firmly. Is there supposed to be layer of grease between the CPU top and the bottom of the fan? I noticed a thin layer of hard, caked, almost powdery stuff there. Could this be affecting the sensing and regulation of the temperature?

When I restarted, the computer now runs for a minute or so and then crashes--totally, as if someone cut the power.

Just restarted after a rest and got into Speccy. It now reports the CPU temperature as 211 F!

Could this new going dead, high temperature, and the racing fan suggest that my hard drive is failing (has failed)?
There is supposed to be a layer of "grease" as you called it. It's heat sink compound and it conducts heat from the cpu to the heatsink, without it you're burning up your cpu. Do not use the computer until you've put some between the cpu and the heatsink.
My System SpecsSystem Spec
19 Jan 2013   #8
gogreen

Windows 7 Home Premium x64 SP 1
 
 

Thanks for the heat sink compound warning! I will get some heat sink compound tomorrow and apply it, and then try again. I've been finding some pretty good instructions in Internet searches on heat sink compound and how to apply it.
My System SpecsSystem Spec
19 Jan 2013   #9
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

Use the link I gave you in post #6. In my opinion it will take care of your needs.
My System SpecsSystem Spec
20 Jan 2013   #10
cmmtch

Windows 7 Home Premium x64 SP1
 
 

Quote   Quote: Originally Posted by gogreen View Post
Thanks for the heat sink compound warning! I will get some heat sink compound tomorrow and apply it, and then try again. I've been finding some pretty good instructions in Internet searches on heat sink compound and how to apply it.
Quote   Quote: Originally Posted by Layback Bear View Post
Use the link I gave you in post #6. In my opinion it will take care of your needs.
Layback Bear's link is what you need to do and that should fix your high cpu temp problems. For comparison right now my cpu temp is 31c and MB temp is 30c while I'm browsing the forum, that is essentially idle. I've never seen it go as high as 50c, high 40's when I'm watching a video full screen. You have a higher end processor than I do, mine is an AMD Athlon II 640x4 Propus 3G.

Follow the instructions at the Layback Bears link and you'll be fine, the fact your pc shut down maybe saved your cpu, lets hope so.
My System SpecsSystem Spec
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 Racing fan(s)




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