CPU fan keeps going then stopping! A little help please

J-Man · Aug 29, 2007

I just put in my new Intel quad Q6600 and new MB and all works fine but the CPU fans is now going but then it stops for about 10 seconds then runs again. Why is this?

DaMulta · Aug 29, 2007

plug in another fan and see if it does that.

What is your bios fan settings?

J-Man · Aug 29, 2007

I'm using the stock heatsink and fan. I'll have a look at my BIOS.

J-Man · Aug 29, 2007

1200RPM about.

LiveOrDie · Aug 29, 2007

have you got it set on auto like smart fan or Qfan some thing like that in the bios does it just stop or does it make a noise and your system so warn you if your cpu fan fails

KennyT772 · Aug 29, 2007

Check your temperatures. Your motherboard is trying to keep the fans as slow as possible based on temps. With the fan on your cpu cools to the point the mobo thinks it can fun fanless, it shuts off the fan, the cpu heats back up, the mobo turns it back on, the cycle continues. Check for Q-fan etc in your bios.

J-Man · Aug 29, 2007

It appears that the problem was because I had the side of the case off and now it hasn't stopped and yes I've turned Q Fan on and another option too and it appears to be fine. Thanks anyway hehe.

KennyT772 · Aug 29, 2007

We are saying turn qfan off. The c2d's stock cooler is rather quiet as is even at full speed. For the lowest temps turn qfan OFF. You may need to change your case's airflow if your cpu fan will cool to the point of shutoff with no case panel and not even close with it on.

J-Man · Aug 29, 2007

My apologies. Putting the side case of didn't resolve my problem. It still stops then goes but also I didn't turn on Q Fan. I turned on 2 other options about CPU Temperature Limit and I set it to 60C then another option but can't remember. I can't find q-fan in my BIOS. Where would I find it?

KennyT772 · Aug 29, 2007

i dont know if it is called qfan or not. there should be some fan related settings in your bios though. You need to just look around and see if you can find anything and turn it off.

3991vhtes · Aug 29, 2007

your fans prolly messed up just get a new one

francis511 · Aug 29, 2007

mine does that all the time .if your temperatures are normal then it doesnt really matter.try
using orthos or atitool and see if it stays on with higher cpu load

savillm · Aug 30, 2007

if i where you i would just get a cable and plug it directley into your power supply so the fan is riunning at full speed all the time

niko084 · Aug 30, 2007

Fan shouldn't be turning "off"..... Slowing down sure maybe but not "off".... I would consider wiring it straight to a molex and then running the monitor wire to the mainboard.

k0rn_h0li0 · Aug 30, 2007

maybe not enough power to the motherboard so yeah.

you also tried putting it in another 3 pin connector on the motherboard and it doesn't work.
make sure like nothings making it stuck so that it doesn't stop and go. get back to us

Namslas90 · Aug 30, 2007

Neat Mobo has lots of features;
ACPI offers both S1 and S3 modes. S3 will power the CPU down to total standby, and shut down the fan.

Specifies the ACPI sleep state when the system enters suspend.
S1(POS) Enables the system to enter the ACPI S1 (Power on Suspend) sleep state.
In S1 sleep state, the system appears suspended and stays in a low power
mode. The system can be resumed at any time.

S3(STR) Enables the system to enter the ACPI S3 (Suspend to RAM) sleep state
(default). In S3 sleep state, the system appears to be off and consumes less
power than in the S1 state. When signaled by a wake-up device or event,
the system resumes to its working state exactly where it was left off.

Also check PC health settings;
Smart FAN Control Method...Specifies how to control CPU fan speed. Auto Lets BIOS control CPU fan speed. (Default)

Intel(R) ...QST Allows CPU fan speed to be controlled by the Intel Quiet System Technology
(QST). This feature requires the installation of Intel Host Embedded Control Interface (HECI) driver from the motherboard driver disk.

Legacy... Allows CPU fan to run at different speed according to the CPU temperature.

Disabled ...Forces CPU fan to run at full speed.

Smart FAN Control Mode...Specifies how to control CPU fan speed. This item is configurable only if CPU Smart FAN Controlis set to Enabled.

Auto... Lets BIOS autodetect the type of CPU fan installed and sets the optimal CPU fan control mode. (Default)

Voltage... Sets Voltage mode for a 3-pin CPU fan.

PWM... Sets PWM mode for a 4-pin CPU fan.

Note: The Voltage mode can be set for a 3-pin CPU fan or a 4-pin CPU fan. However, for a 4-pin CPU fan that is not designed following Intel PWM fan specifications, selecting PWM mode may not effectively reduce the fan speed.

k0rn_h0li0 · Aug 30, 2007

hmm but were trying to see why its stopping and going not how fast it runs. although nice features from the motherboard. stuff like this can go wrong sometimes cause its so advanced. ROFL

Namslas90 · Aug 30, 2007

k0rn_h0li0 said:
hmm but were trying to see why its stopping and going not how fast it runs. although nice features from the motherboard. stuff like this can go wrong sometimes cause its so advanced. ROFL

From reading the manual ACPI S3 mode may stop the fan(on that mobo). It all depends on weather or not the sysytem is actually doing anything or not. If it is actually doing something, then the fan may be bad and not turning when voltage is dropped to low speed level.

k0rn_h0li0 · Aug 30, 2007

maybe if it was actually doing something i mean the cpu the fan runs and if it doesn't then it sits there till you do something. or what namslas said it could be the fan. good luck with the fix

savillm · Aug 30, 2007

what if is the fan header thats on the mobo have you tryed to connect it directley to the psu to see if the fan runs ok that way i think it coild be a faulty connection on the mobo fan header.

Namslas90 · Aug 30, 2007

savillm said:
what if is the fan header thats on the mobo have you tryed to connect it directley to the psu to see if the fan runs ok that way i think it coild be a faulty connection on the mobo fan header.

The fan spins but the issue is "is it working properly" when the ACPI kicks in. The PSU is not controlled by the ACPI Function so that won't realy tell us if the fan header is working properly or not.

savillm · Aug 31, 2007

Namslas90 said:
The fan spins but the issue is "is it working properly" when the ACPI kicks in. The PSU is not controlled by the ACPI Function so that won't realy tell us if the fan header is working properly or not.

yeah true i dident think about that lol

J-Man · Aug 31, 2007

It's ok now guys. I changed one setting in my BIOS to PWN which means my CPU is connected to a 4pin CPU. And I changed the SMART Fan setting in BIOS and my fans hasn't stopped yet and it's going fine.

[I.R.A]_FBi · Aug 31, 2007

PWN ... or u meant u got PWN'T?

System Name	Watercooled beast
Processor	Intel Core 2 Quad Q9550 @ 4.02GHz
Motherboard	ASUS Rampage Formula X48
Cooling	Swiftech Apogee GTZ, Black Ice GTX Xtreme 480, EK 250 Rev 2, EK 4870 X2, MCP655, 1/2" Tygon Tubing
Memory	4GB DDR2 OCZ @ 1066MHz 2.1V
Video Card(s)	HIS ATI Radeon HD 4870 X2 800 on core, 1000 on memory (overclocked in CCC)
Storage	500GB Maxtor Diamondmax 22 SATA II 32MB Cache
Display(s)	Samsung 24" SM245B
Case	SilverStone TJ07 black/windowed version
Audio Device(s)	Creative X-Fi Xtreme Gamer Fatal1ty + Logitech Z-5500
Power Supply	Thermaltake Toughpower 1200W Modular
Software	Windows Vista Ultimate 64-bit Retail

System Name	Work in progress
Processor	AMD 955---4Ghz
Motherboard	MSi GD70
Cooling	OcZ Phase/water
Memory	Crucial2GB kit (1GBx2), Ballistix 240-pin DIMM, DDR3 PC3-16000
Video Card(s)	CrossfireX 2 X HD 4890 1GB OCed to 1000Mhz
Storage	SSD 64GB
Display(s)	Envision 24'' 1920x1200
Case	Using the desk ATM
Audio Device(s)	Sucky onboard for now :(
Power Supply	1000W TruePower Quattro

System Name	Watercooled beast
Processor	Intel Core 2 Quad Q9550 @ 4.02GHz
Motherboard	ASUS Rampage Formula X48
Cooling	Swiftech Apogee GTZ, Black Ice GTX Xtreme 480, EK 250 Rev 2, EK 4870 X2, MCP655, 1/2" Tygon Tubing
Memory	4GB DDR2 OCZ @ 1066MHz 2.1V
Video Card(s)	HIS ATI Radeon HD 4870 X2 800 on core, 1000 on memory (overclocked in CCC)
Storage	500GB Maxtor Diamondmax 22 SATA II 32MB Cache
Display(s)	Samsung 24" SM245B
Case	SilverStone TJ07 black/windowed version
Audio Device(s)	Creative X-Fi Xtreme Gamer Fatal1ty + Logitech Z-5500
Power Supply	Thermaltake Toughpower 1200W Modular
Software	Windows Vista Ultimate 64-bit Retail

System Name	Watercooled beast
Processor	Intel Core 2 Quad Q9550 @ 4.02GHz
Motherboard	ASUS Rampage Formula X48
Cooling	Swiftech Apogee GTZ, Black Ice GTX Xtreme 480, EK 250 Rev 2, EK 4870 X2, MCP655, 1/2" Tygon Tubing
Memory	4GB DDR2 OCZ @ 1066MHz 2.1V
Video Card(s)	HIS ATI Radeon HD 4870 X2 800 on core, 1000 on memory (overclocked in CCC)
Storage	500GB Maxtor Diamondmax 22 SATA II 32MB Cache
Display(s)	Samsung 24" SM245B
Case	SilverStone TJ07 black/windowed version
Audio Device(s)	Creative X-Fi Xtreme Gamer Fatal1ty + Logitech Z-5500
Power Supply	Thermaltake Toughpower 1200W Modular
Software	Windows Vista Ultimate 64-bit Retail

Processor	Intel Core i9 10980XE @ 4.7Ghz 1.2v
Motherboard	ASUS Rampage VI Extreme Omega
Cooling	EK-Velocity D-RGB, EK-CoolStream PE 360, XSPC TX240 Ultrathin, EK X-RES 140 Revo D5 RGB PWM
Memory	G.Skill Trident Z RGB F4-3000C14D 64GB
Video Card(s)	Asus ROG Strix GeForce RTX 4090 OC WC
Storage	M.2 990 Pro 1TB / 10TB WD RED Helium / 3x 860 2TB Evos
Display(s)	Samsung Odyssey G7 28"
Case	Corsair Obsidian 500D SE Modded
Power Supply	Cooler Master V Series 1300W
Software	Windows 11

System Name	Raptor
Processor	Intel E8400 Wolfdale @3600
Motherboard	Asus P5Q-Pro LGA775
Cooling	Zalman CNPS9700
Memory	1024mbx2 Crucial Ballistix DDR800
Video Card(s)	XFX 9600GT
Storage	Seagate 7200.11 500GB
Display(s)	Acer AL2216Wbd and Acer AL1717
Case	Gigabyte 3DAurora Black
Audio Device(s)	Creative X-Fi Extreme Gamer Faitality
Power Supply	OCZ GameXStream 500w

Processor	AMD Athlon 64 3800+ Venice 2.4GHz
Motherboard	ASUS A8V-VM SE
Cooling	Stock
Memory	1GB DDR400
Video Card(s)	DiamondViper Radeon X1650PRO 512MB PCI-e
Storage	Seagate 250GB SATA
Display(s)	Acer AL2002W 20" LCD Widescreen
Case	cheap
Audio Device(s)	Creative SoundBlaster
Power Supply	500 watt
Software	Vista Ultimate
Benchmark Scores	4.1 Vista index

Processor	Core I5 4440 / 4430
Motherboard	Asus z87-k / Gigabyte ga h97- d3h
Cooling	Arctic freezer / Generic
Memory	8 gb Mushkin / Various
Video Card(s)	Radeon 7850 cf / Gtx 690
Storage	Samsung 850 EVO 250 gb / 2x1 terabyte hdds Wd 256 gb nvme
Display(s)	Technika 32" / Asus 24` ips
Case	Corsair
Audio Device(s)	X-fi Titanium
Power Supply	Corsair 850 w
Software	Windows 10

System Name	The 831
Processor	Intel Core 2 Duo E6600 with X2O Delta CPU Waterblock
Motherboard	ASUS P5N-E SLI
Cooling	8 x 120mm fans and X2O Delta CPU Waterblock X2O 400 12V Pump/Reservoir 240mm Radiator 10/8mm Tubing
Memory	OCZ SLI Ready 4Gb PC2-6400 DDR2-800 5-4-4-15 (2x2GB)
Video Card(s)	BFG GeForce 8800 GTS OC 320MB
Storage	Western Digital 160GB SATA and a Western Digital 250GB SATA
Display(s)	22" ViewSonic Widescreen LCD
Case	COOLERMASTER STACKER 831
Audio Device(s)	Creative Sound Blaster Audigy SE
Power Supply	OCZ ModStream 520w ATX2.2
Software	WINDOWS XP HOME SP3

System Name	Back to Blue
Processor	i9 14900k
Motherboard	Asrock Z790 Nova
Cooling	Corsair H150i Elite
Memory	64GB Corsair Dominator DDR5-6400 @ 6600
Video Card(s)	EVGA RTX 3090 Ultra FTW3
Storage	4TB WD 850x NVME, 4TB WD Black, 10TB Seagate Barracuda Pro
Display(s)	1x Samsung Odyssey G7 Neo and 1x Dell u2518d
Case	Lian Li o11 DXL w/custom vented front panel
Audio Device(s)	Focusrite Saffire PRO 14 -> DBX DriveRack PA+ -> Mackie MR8 and MR10 / Senn PX38X -> SB AE-5 Plus
Power Supply	Corsair RM1000i
Mouse	Logitech G502x
Keyboard	Corsair K95 Platinum
Software	Windows 11 x64 Pro
Benchmark Scores	31k multicore Cinebench - CPU limited 125w

Processor	Amd opteron socket 940 250 sledgehammer 2.4ghz x2
Motherboard	amd k8t master2 far
Cooling	msi k8t stock heatsinks
Memory	2x1gig random ecc ram
Video Card(s)	ati x1600 512mb agp pro 8x
Storage	seagate 2x200 gig hdd
Display(s)	dunno
Case	aprevia navigator
Audio Device(s)	creative pro 5.1 sorround
Power Supply	antec 500 watt psu
Software	windows xp media center 2005

Processor	C2Q6600 @ 1.6 GHz
Motherboard	Anus PQ5
Cooling	ACFPro
Memory	GEiL2 x 1 GB PC2 6400
Video Card(s)	MSi 4830 (RIP)
Storage	Seagate Barracuda 7200.10 320 GB Perpendicular Recording
Display(s)	Dell 17'
Case	El Cheepo
Audio Device(s)	7.1 Onboard
Power Supply	Corsair TX750
Software	MCE2K5

CPU fan keeps going then stopping! A little help please

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