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bodylocker
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13580
January 26th, 2022 23:00
Optiplex 7070 SFF, fan runs with full speed when power cable plugged
When power cable plugged to my Dell Optiplex 7070 SFF, the fan runs with full speed with huge noise. After pressed the power button to start OS, the fan become normal. After shutdown the OS, the fan runs with full speed again till I unplug the power cable. I cannot stand the noise, how to solve it ?
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6951
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Posted January 27th, 2022 08:00
If you unplug power cord from a pc that was previously powered on, it may confuse the power on circuit the next time you plug in power cord again.
try keep power cord plugged in all the time and use power button only to turn off/on pc. see if that prevents some of the fan rev noise.
some optiplex bios is designed to rev the cpu fan to full blast temporarily then quiets after POST. Try turn on minimal boot option in bios to see if that could mitigate the noise issue.
Fast Boot This option can speed up the boot process by bypassing some compatibility steps: - Minimal — The system boots quickly, unless the BIOS has been updated, memory changed, or the previous POST did not complete.
- Thorough — The system does not skip any steps in the boot process.
- Auto — This allows the operating system to control this setting (this works only when the operating system supports Simple Boot Flag).
6936
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Posted January 27th, 2022 19:00
Thanks for you suggestion, but if I keep the power cord plugged in all the time, after I turn off the PC, the fan will run at full speed all the time.
Also I tried changing the Fast Boot option to Minimal, but it doesn't work.
6840
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Posted February 12th, 2022 00:00
Thanks for your suggestion, but after I updated the bios to the latest version 1.12.0, this problem still exists.
6830
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Posted February 12th, 2022 03:00
One more information, even no hard disk plugged, this problem exists.
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Posted August 23rd, 2023 13:16
I have this problem too
Can you solve it yet?
and How?
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Posted August 30th, 2023 13:09
same problem
I have updated to the latest BIOS, no remedy
any solution
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Posted August 30th, 2023 21:14
If you can't find a solution here, use the "Get help now" button at the bottom-right.
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Posted October 3rd, 2023 22:25
So isn't there a trouble shooting guide? This is 1 of Amazon's top budget refurbished things and they installed the front fan backwards. First of all sometimes the technician has the front fan backwards. The fan was pulling real hard for 4 months and all that time I didn't realize it was meant to blow, but that's not helping now. I'm afraid everything got cooked. Everytime I plug into the power supply, the fans just keep running and running, while the power button doesn't do anything. taking out the CMOS battery out and putting it back in didn't help and neither did and re snapping in the ram sticks
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DELL-Cares
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Posted January 26th, 2022 23:00
After verifying ownership and completing troubleshooting, a DELL-Cares agent setup service.
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