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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
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AdrianG001
6 Operator
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4K Posts
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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.
DELL-Chris M
Community Manager
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56.9K Posts
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232.1K Points
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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.