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My Inspiron's fan is running constantly after BIOS/Software update - Any ideas where to look to see what's heating up?


kojack

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I have noticed since I did a bios and full software update my fan is running alot more than normal.  Any ideas where to look to see what is causing it?

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Thoughts...

 

1. Do a full system shutdown and then turn it on again from a cold boot, if you have not done that yet...  That will reset the EC if something about the BIOS update process itself caused it to change fan behavior.

2. Check Task Manager "Details" tab and sort processes by CPU usage.  Make sure there isn't a rogue background process gobbling CPU time.  (With today's many-core CPUs, even low values in the CPU use % column are concerning.  For example, in a system with eight logical cores [4 cores + hyperthreading], 12% CPU use [100% ÷ 8] represents a full core of activity, shouldn't be happening on an idle workload, and would most likely cause the fans to spin up.)

3. It's possible that Dell bungled the fan tables in the latest BIOS update.  Wouldn't be the first time.  You can roll back to the previous BIOS version and see if it behaves better.

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4 hours ago, Aaron44126 said:

Thoughts...

 

1. Do a full system shutdown and then turn it on again from a cold boot, if you have not done that yet...  That will reset the EC if something about the BIOS update process itself caused it to change fan behavior.

2. Check Task Manager "Details" tab and sort processes by CPU usage.  Make sure there isn't a rogue background process gobbling CPU time.  (With today's many-core CPUs, even low values in the CPU use % column are concerning.  For example, in a system with eight logical cores [4 cores + hyperthreading], 12% CPU use [100% ÷ 8] represents a full core of activity, shouldn't be happening on an idle workload, and would most likely cause the fans to spin up.)

3. It's possible that Dell bungled the fan tables in the latest BIOS update.  Wouldn't be the first time.  You can roll back to the previous BIOS version and see if it behaves better.

 

How can I back track bios updates?  I have tried everything else you mentioned. 

 

Edit:  I just looked in task manager my CPU is being used between 8-24% off and on.  Nothing to cause the fans to be hitting hard.  I use this system daily and never had fans going unless I was doing a video edit encode etc.  

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3 hours ago, kojack said:

How can I back track bios updates?  I have tried everything else you mentioned.

 

Go to dell.com/support, look up your system model, and go to driver downloads.  You should be able to find old BIOS versions in there.  Just run the .exe to install.

 

Two gotchas:

  • Occasionally they release a BIOS update and you will see in the release notes that you can't downgrade if you upgrade to this version.  It is not always possible to downgrade.
  • Also, in BIOS setup there is an option to block BIOS downgrades, which you might have to disable.
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Apple MacBook Pro 16-inch, 2023 (personal) • Dell Precision 7560 (work) • Full specs in spoiler block below
Info posts (Dell) — Dell Precision key postsDell driver RSS feeds • Dell Fan Management — override fan behavior
Info posts (Windows) — Turbo boost toggle • The problem with Windows 11 • About Windows 10 LTSC

Spoiler

Apple MacBook Pro 16-inch, 2023 (personal)

  • M2 Max
    • 4 efficiency cores
    • 8 performance cores
    • 38-core Apple GPU
  • 96GB LPDDR5-6400
  • 8TB SSD
  • macOS 14 "Sonoma"
  • 16.2" 3456×2234 120 Hz mini-LED VRR display
  • Wi-Fi 6E + Bluetooth 5.3
  • 99.6Wh battery
  • 1080p webcam
  • Fingerprint reader

Also — iPhone 12 Pro 512GB, Apple Watch Series 8

 

Dell Precision 7560 (work)

  • Intel Xeon W-11955M ("Tiger Lake")
    • 8×2.6 GHz base, 5.0 GHz turbo, hyperthreading ("Willow Cove")
  • 64GB DDR4-3200 ECC
  • NVIDIA RTX A2000 4GB
  • Storage:
    • 512GB system drive (Micron 2300)
    • 4TB additional storage (Sabrent Rocket Q4)
  • Windows 10 Enterprise LTSC 2021
  • 15.6" 3940×2160 IPS display
  • Intel Wi-Fi AX210 (Wi-Fi 6E + Bluetooth 5.3)
  • 95Wh battery
  • 720p IR webcam
  • Fingerprint reader

 

Previous

  • Dell Precision 7770, 7530, 7510, M4800, M6700
  • Dell Latitude E6520
  • Dell Inspiron 1720, 5150
  • Dell Latitude CPi
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