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Windows 7: CPU fan issues

16 Mar 2019   #1
Kulvin

Mauritius
 
 
CPU fan issues

Hello,

I have issues with my CPU fan.
When i turn on my CPU, it shows correctly "Windows Loading" then gets NO SIGNAL on screen and my CPU fan starts to spin fast. Then, I click on the reset button on my CPU to start back again my CPU, it shows to "Start Windows Normally" then it works fine but when using the PC for 30 minutes to 1 hour, the CPU fan starts to spin fast for like 2 - 5 seconds then run normal then spins fast in like every 10 minutes.

PC Specs:
Dell Optiplex 380 - MT Tower
400W Power Supply (Cooler Master)
Intel Core 2 Quad Q9650 @ 3.00Ghz
2 * 4GB RAM 1333MHz DDR3 (Low Density)
Nvidia GeForce GT 1030

Already clean up the dust inside the CPU and the CPU fan and has also applied new thermal paste.

Please help...


My System SpecsSystem Spec
.
16 Mar 2019   #2
Megahertz07

Windows 7 HP 64
 
 

I would say you have two problems.
As your computer is quite old, the CPU heat sink can be clogged with dust. Remove the case side panel and look the heat sink. If it's dirty, see if you can remove only the fan, leaving on the heat sink on the MB / CPU. If you can't remove only the fan, you will have to remove the heat sink and fan. Clean the heat sink with a paint brush and a vacuum cleaner. If you remove only the fan,you don't need to clean the old thermal paste and apply new. If you remove the heat sink and fan you will have to clean and apply new thermal paste. Be very careful with the fan blades. The blades axle is very delicate.

The fan speed up and down is normal. During heavy operation (as on startup) the CPU generates more heat and the fan speeds up. On idle, the fan speeds down.

The no start is another problem not related to the fan operation.
Once you're running windows, schedule a disk check.
Open a CMD window as admin and type:
chkdsk c: /f
It will say that the disk is in use and ask if you want to schedule to next start. =Yes.
Reboot.
Pay attention on the results, specially bad clusters, bad sectors or bad blocks.

Back to Windows, do a System File check.
Open a CMD window as admin and type:
sfc /scannow

Report
My System SpecsSystem Spec
16 Mar 2019   #3
Kulvin

Mauritius
 
 

@Megahertz07

I already cleaned the heat sink with paint brush/vacuum cleaner and applied new thermal paste.

Report for no start problem that you asked to perform says "Windows Resource Protection did not find any integrity violations."
My System SpecsSystem Spec
.

16 Mar 2019   #4
Megahertz07

Windows 7 HP 64
 
 

What about check disk?
My System SpecsSystem Spec
16 Mar 2019   #5
Kulvin

Mauritius
 
 

@Megahertz07

that's the result after check disk


Attached Images
CPU fan issues-untitled.jpg 
My System SpecsSystem Spec
16 Mar 2019   #6
Megahertz07

Windows 7 HP 64
 
 

It found problems on the disk. You must run it with the /f
Open a CMD window as admin and type:
chkdsk c: /f
It will say that the disk is in use and ask if you want to schedule to next start. =Yes.
Reboot.
My System SpecsSystem Spec
16 Mar 2019   #7
Kulvin

Mauritius
 
 

It is currently performing "CHKDSK is verifying file data" after I restart my PC.

What is the next step to do?
My System SpecsSystem Spec
16 Mar 2019   #8
Megahertz07

Windows 7 HP 64
 
 

During POST enter BIOS. Is the clock with the right date and time?
My System SpecsSystem Spec
17 Mar 2019   #9
townsbg

Windows 7 pro 64-bit sp 1
 
 

1) How much thermal paste did you put on it? You don't put very much because if you put on too much it won't work.
2) Did you actually take the fan off of the heat sink? If so did you note which way the fan was blowing? Some blow air towards the heat sink and others blow air away from it. If it's possible that you put the fan on the wrong way you might try reversing it.
My System SpecsSystem Spec
17 Mar 2019   #10
Kulvin

Mauritius
 
 

@townsbg

I did put the required thermal paste (all over the processor) and yes i did take off the fan from the heat sink and put it back correctly where it was blowing air towards the heat sink.
My System SpecsSystem Spec
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 CPU fan issues




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