Added New Fan to my PC/small issue?

J

Johanson3246

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Jan 2, 2022
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Hello. Years ago, I added a new fan to my Desktop PC for proper ventilation/cooling. Recently I replaced a hard drive and had the side of the case/panel open. I noticed that after each time I turn the PC on, fan starts spinning, then stops for 5 seconds, and then resumes spinning properly. No other issues with the PC nor errors reported in the system. (Windows 10). I do clean my PC on regular basis. I assume this has been happening for years I just noticed it today. Would you please advise me if If this is normal or should I be concerned?

Thank you kindly for any advise you might have.

Respectfully,

Johan
 
Sorry, forgot to add.

OS Name Microsoft Windows 10 Home
Version 10.0.19044 Build 19044
System Name DESKTOP
System Manufacturer Dell Inc.
System Model Inspiron 5675
System Type x64-based PC
Processor AMD Ryzen 7 1700 Eight-Core Processor, 3000 Mhz, 8 Core(s), 16 Logical
BIOS Version/Date Dell Inc. 1.4.1, 10/14/2020
 
One of my PC's does this exact same thing, it's been running fine with no issues for over 10 years.
So, I'd say if there are no overheating issues or otherwise, it's normal.
 
Johanson3246 said:
I noticed that after each time I turn the PC on, fan starts spinning, then stops for 5 seconds, and then resumes spinning properly.
Click to expand...
I'd say this is fairly normal.

When you first start the PC, the default is for fans spinning. That makes sense. Then the boot process continues and system monitoring loads completely and senses the cool system and shuts off the fan. Then in that 5 seconds (a long time in hardware time), the system warms up enough to tell the fans to start spinning again.

If your fan continuously cycled on and off, on and off with those same 5 second intervals, then I would say there is a problem. But since you said it spins properly after that first event, IMO, all is okay.

I recommend using a system monitor to keep an eye on your temps. I use and recommend Core Temp to monitor CPU temps in real time. I have mine set to show only the "Highest temperature" in the System Tray/Notification Area. And for the record, the industry norm is to report computer temps in Celsius.
 
Thank you so much xrobwx71, FreeBooter and Digerati for your posts and for being so kind to assist me. All my fans are setup to run constantly being active. Never had problems with overheating. I was just concerned that the mentioned short 5 second run/stop/run at boot time can damage the motherboard in same way. But you explained it perfectly.

If I may, I would have two other question. I posted them on other forums but did get conflicting advises, like change the power supply, reset BIOS/flash, change wires/cables. This applies to my second question. 1: I also replaced years ago a CPU fan, purchased a high quality expensive one. runs just fine, no issues, no overheating. My Dell PC has a option in BIOS to run hardware test upon boot, I run it few times, and it reports an error with CPU fan, however I have never had any problems with it. CPU has not been overheating, and is cooled well. The fan has a wire with 3 pins, and I have it on the motherboard there is a 4 pin connector for CPU fan. So I have it on right side, leaving 1 pin open on left. I do not want to keep changing it because the fan runs perfectly fine and cooling CPU with proper speed. Can I ignore it? Perhaps the old fan had wire with 4 pins...

2: For the last 2 months, I purchased 3 new internal mechanical hard drives, WD Black Performance/gaming 1 TB. I run Western Digital Dashboard's long test and reported no errors. Also running Hard Disk Sentinel to monitor Smart values. I installed them each separately, only intend to have 1 hard drive in my PC. Reading SMART values, on each of them the spin up time is going up and since the value 3 has to do with motor/bearing troubles I would like to know if that is normal for a new hard drive. I have a time window open to return the drives, but if those are fine, I just keep them. I am attaching a screenshot of the SMART values as well as voltages from PSU for possible consideration of examining them.

Thank you for being so kind and willing to assist/help/advise me if my PC is stable in these regards mentioned above.

Respectfully,

Johan
 

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If the CPU fan is running and there are no problems, I would leave it alone. Which fan is it in Speedfan? Fan 1? That joker must be loud if that number is correct in fan 1.

The SMART values are all within normal parameters.
 
Hmmm. I am a little concerned with the voltages shown in your Speedfan shot.

Note the below chart of allowed tolerances, as dictated by the ATX Form Factor standard for PC power supplies.

Voltage Tolerance Chart.JPG

Your +5VDC at 4.87V is within the allowed tolerances. But your +3.3V and +12V appear to be too low (don't worry about the negative voltages).

Since your computer is working fine otherwise, I would not worry too much about this. Those sensors are cheap, low tech, and often not accurate. And monitoring programs are not always accurate either. If me, I would doublecheck with another monitoring program like HWiNFO64. Note this program is very (if not too) informative. When using for the first time, I recommend you select “Sensors only” when prompted. Then scroll down to your motherboard’s section to see what the voltages say there. But note if HWiNFO is reading the same sensors as Speedfan, it too may show out-of-tolerance voltages. Again, probably nothing to worry about - unless just really curious (or anal like me!). Then I might verify with another PSU, multimeter, or good PSU Tester.
 
Great information! Thank you very much. "Speedfan? Fan 1?" I wish I knew...lol

Thank you for the voltage info. I will run the HWiFO64 to see the difference.

Again, I do appreciate your help. Thank you!

Johan
 
Here are the results from the app you advised me to run. The app notified me that reading may not be accurate due to not having enough info about the system. Yes, +3.3V and +12V appear to be too low there as well. Do you think it can create problems with the system? I had a PSU upgraded by Dell Support to 850W. It is a Dell's brand, no clue if it is any good. Should I be concerned with lower voltage readings if everything is working fine, or it can damage some components in the PC?

Thanks
 

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Okay - so clearly there is something wrong with the sensors or how they are being read because if your +3.3V was really only 2.172V, the +5V really only 3.649V and your +12V really only 7.968V, your computer would not even be running. Yet it is. Therefore your voltages must be good and only the reporting of those voltages is incorrect. I have seen this many times before and for sure, while it is a bit annoying, do not worry about it.
Johanson3246 said:
Should I be concerned with lower voltage readings if everything is working fine, or it can damage some components in the PC?
Click to expand...
So no. Do not be concerned. And no, it will not damage other components because those voltages are not really that low. They are just false "readings".

You are good to go!
 
Any reading within 10% of the specified voltage is considered acceptable

Inaccurate content edited and/or removed by moderator. See post #19 below.
 
Last edited by a moderator:
Thank you so much. I have a app AIDA64 extreme and here are the results, they seem to be more accurate?
 

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Anyhow, thanks so much for all your time you spent helping me to understand these issues. I am glad that I can leave all as is and not to worry about advises from other blog to replace PSU, remove battery, change cables, etc. Lol

I do appreciate sharing your knowledge with me.

With much respect,

Johan
 
FreeBooter said:
Any reading within 10% of the specified voltage is considered acceptable
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No it isn't. The ATX Form Factor Standard for PSUs clearly indicates allowed tolerances for the +3.3V, +5V and +12V voltages is no more than ±5% - as indicated in the chart (copied direct from the ATX standard) that I inserted in Post #8 above.
 

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