Precision Tower Power LED Blinks White Five Times

요약: Learn why a power LED on a Precision Tower blinks white five times when the power button is pressed or when the computer has power connected.

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증상

A Precision Tower desktop may appear to boot for a long period of time with no obvious indication that the boot is still in progress. A breathing feature has been added to the power LED as a sign-of-life indicator during long boot sequences.

The breathing LED behaviors:

  • The power button LED blinks white five times and then turns off when the power cable is connected.
  • The power button LED blinks white five times when the power button is pressed, before the computer begins to boot.

These behaviors provide a visible sign of life during power restoration and boot initiation.

Affected Platforms:

  • Precision 5860 Tower
  • Precision 7875 Tower
  • Precision 7960 Tower

원인

This is not a hardware failure or functional defect. A product change was requested to provide a visible sign-of-life indicator during extended boot sequences.

해결

The power LED breathing feature is implemented starting with the BIOS version that is listed below for each platform.

  • Precision 5860 Tower: BIOS 3.3.0
  • Precision 7875 Tower: BIOS 2.4.0
  • Precision 7960 Tower: BIOS 2.15.0

해당 제품

Precision 5860 Tower, Precision 7875 Tower, Precision 7960 Tower
문서 속성
문서 번호: 000446166
문서 유형: Solution
마지막 수정 시간: 16 7월 2026
버전:  2
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