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Fans ramp up and down or fans boost after operating system is loaded

After updating to the latest BIOS and loading the BIOS default values, the system may experience the following after the operating system reaches the GUI screen

  1. the fans would boost to high and would stay high, or
  2. the fans would boost to high and then would ramp down and repeat the scenario

To workaround this fan issue, during POST, go to BIOS by pressing <F2> -> Advanced Menu -> Processor Configuration -> Processor C6 Report -> Disabled (value would be enabled when BIOS default is loaded).

Boot to the operating system and the fan issue would be resolved.

This applies to:

Intel® Server Board S3420GP
Intel® Server Chassis SC5650 Family
Intel® Server System SR1630GP
Intel® Server System SR1630HGP

Solution ID: CS-031036
Last Modified: 18-Jul-2013
Date Created: 09-Nov-2009
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