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732

September 16th, 2021 03:00

Precision 3551, sleep mode fans keep working

Hi Team,

When i put my Dell Precision 3551 the fans keep working. Updates - Firmware, BIOS and Windows are done.

What can be the issue?

thanks

6 Operator

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4K Posts

September 17th, 2021 07:00

Do I need to update the BIOS before I run diagnostics? I am running diagnostics now and if I tap the Esc key it aborts the testing, doesn't allow me to select Fan. 

 

Community Manager

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56.9K Posts

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232.1K Points

October 11th, 2021 11:00

Fans will always run in sleep mode due to Microsoft Modern Standby. This is a Windows feature in which the background applications (like wireless activity, updates) continue to work. We recommend you to use Hibernate mode.

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