CPU fan stopped increasing speed under load.

BloodxJunkie · 05-05-2008, 08:58 AM

Hello again!

Well I was playing battlefield 2 yesterday. As I was playing my CPU fan stopped spinning at full speed and went down to an idle speed. I have no idea how this happened. I haven't "tinkered" with anything lately. So once I noticed that it had stopped spinning fast enough I assumed that it was the dust on the fins. I took off the fan a cleaned all of the dust off and put the fan back on. The fan still does not increase speed under load. It just stays at an idle speed. So my question is... Is the fan warn out? Should I buy a new CPU heat sink and fan? Could it be my PSU?

brdr25 · 05-05-2008, 09:25 AM

check in your bios that the speed is set to auto. also if u download a thing called speedfan http://www.almico.com/sfdownload.php more info onn it here http://www.almico.com/speedfan.php ) you can check the speed and change stuff etc.. which could be usfull. and check the connections all ok.
hopfelly some of this might help

BloodxJunkie · 05-05-2008, 09:41 AM

The problem with that is speedfan or any other program like speedfan wont detect my CPU or ANY of my fans. =/ All of my connections are on correctly.

mommabear · 05-05-2008, 10:17 AM

Just an FYI: fans can fail.

BloodxJunkie · 05-05-2008, 10:22 AM

Quote:

Originally Posted by mommabear

Just an FYI: fans can fail.

I know that they can fail. But it could also be a power supply problem.

dai · 05-05-2008, 10:39 AM

post what the bios lists tempretures and voltages as

BloodxJunkie · 05-05-2008, 11:54 AM

When I go into the BIOS the temp of my CPU will go up to like 90 degrees C

. I don't want to burn out my CPU to check the voltages. I know that I have seated the CPU heat sink on properly, its just that the the the fan isn't spinning fast enough. Last time i checked my voltages the 12v was a little low so I used a multimeter to measure it and it was fine.

dai · 05-05-2008, 12:00 PM

multi meters the best option software is not that reliable
replace the fan they are cheap
redo the paste with some arctic silver
http://www.arcticsilver.com/arctic_s...structions.htm
if you are running it at 90c it will not last long turn it off until you have done the paste and replaced the fan

BloodxJunkie · 05-05-2008, 12:22 PM

Alright I will buy a new fan later on this week. Thanks for your help

dai · 05-05-2008, 12:34 PM

don't forget the paste

05-05-2008, 08:58 AM	#1 (permalink)
BloodxJunkie Registered User Join Date: Aug 2007 Posts: 80 OS: Windows XP Pro SP3	CPU fan stopped increasing speed under load. Hello again! Well I was playing battlefield 2 yesterday. As I was playing my CPU fan stopped spinning at full speed and went down to an idle speed. I have no idea how this happened. I haven't "tinkered" with anything lately. So once I noticed that it had stopped spinning fast enough I assumed that it was the dust on the fins. I took off the fan a cleaned all of the dust off and put the fan back on. The fan still does not increase speed under load. It just stays at an idle speed. So my question is... Is the fan warn out? Should I buy a new CPU heat sink and fan? Could it be my PSU? __________________ PC: Diamond Viper Radeon HD 3850/Pentium D 3.2Ghz/Intel D945GCCR mobo/Hitachi 256Gb HDD/2 GB PC5300 RAM/Antec Trio 550W Last edited by BloodxJunkie : 05-05-2008 at 09:10 AM.

05-05-2008, 09:25 AM	#2 (permalink)
brdr25 Registered User Join Date: Apr 2008 Posts: 5 OS: vista	Re: CPU fan stopped increasing speed under load. check in your bios that the speed is set to auto. also if u download a thing called speedfan http://www.almico.com/sfdownload.php more info onn it here http://www.almico.com/speedfan.php ) you can check the speed and change stuff etc.. which could be usfull. and check the connections all ok. hopfelly some of this might help Last edited by brdr25 : 05-05-2008 at 09:26 AM.

05-05-2008, 09:41 AM	#3 (permalink)
BloodxJunkie Registered User Join Date: Aug 2007 Posts: 80 OS: Windows XP Pro SP3	Re: CPU fan stopped increasing speed under load. The problem with that is speedfan or any other program like speedfan wont detect my CPU or ANY of my fans. =/ All of my connections are on correctly. __________________ PC: Diamond Viper Radeon HD 3850/Pentium D 3.2Ghz/Intel D945GCCR mobo/Hitachi 256Gb HDD/2 GB PC5300 RAM/Antec Trio 550W Last edited by BloodxJunkie : 05-05-2008 at 09:42 AM.

05-05-2008, 10:17 AM	#4 (permalink)
mommabear Registered User Join Date: Apr 2008 Posts: 207 OS: XP Home Sp2	Re: CPU fan stopped increasing speed under load. Just an FYI: fans can fail.

05-05-2008, 10:39 AM	#6 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 39,452 OS: vista 32x ultimate retail	Re: CPU fan stopped increasing speed under load. post what the bios lists tempretures and voltages as __________________

05-05-2008, 11:54 AM	#7 (permalink)
BloodxJunkie Registered User Join Date: Aug 2007 Posts: 80 OS: Windows XP Pro SP3	Re: CPU fan stopped increasing speed under load. When I go into the BIOS the temp of my CPU will go up to like 90 degrees C. I don't want to burn out my CPU to check the voltages. I know that I have seated the CPU heat sink on properly, its just that the the the fan isn't spinning fast enough. Last time i checked my voltages the 12v was a little low so I used a multimeter to measure it and it was fine. __________________ PC: Diamond Viper Radeon HD 3850/Pentium D 3.2Ghz/Intel D945GCCR mobo/Hitachi 256Gb HDD/2 GB PC5300 RAM/Antec Trio 550W

05-05-2008, 12:00 PM	#8 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 39,452 OS: vista 32x ultimate retail	Re: CPU fan stopped increasing speed under load. multi meters the best option software is not that reliable replace the fan they are cheap redo the paste with some arctic silver http://www.arcticsilver.com/arctic_s...structions.htm if you are running it at 90c it will not last long turn it off until you have done the paste and replaced the fan __________________

05-05-2008, 12:22 PM	#9 (permalink)
BloodxJunkie Registered User Join Date: Aug 2007 Posts: 80 OS: Windows XP Pro SP3	Re: CPU fan stopped increasing speed under load. Alright I will buy a new fan later on this week. Thanks for your help __________________ PC: Diamond Viper Radeon HD 3850/Pentium D 3.2Ghz/Intel D945GCCR mobo/Hitachi 256Gb HDD/2 GB PC5300 RAM/Antec Trio 550W

05-05-2008, 12:34 PM	#10 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 39,452 OS: vista 32x ultimate retail	Re: CPU fan stopped increasing speed under load. don't forget the paste __________________