System fan spins high speed at normal temperature causing a loud noise - ThinkCentre A57, M57e
Symptom

After the system has been powered on the front chassis fan may suddenly speed up causing a loud noise.

Affected configurations

The above symptom may occur on the following systems:

  • ThinkCentre A57 (type 9703, 9784, 9792, 9853, 9788, 9704, 9785, 9794, 9859, 9807, 9702, 9709, 9789, 9851, 9708)
  • ThinkCentre M57e (type 9481, 9489, 7065, 7096, 9438, 9952, 9352, 9359, 9482, 9622, 7066, 7098, 9487, 9948, 9349, 9357, 9439, 9488, 7064, 7094, 9356)

The system’s Bios will be 51KT49A or less.

Solution

Download and update the system Bios to 51KT50A. The system Bios can be obtained from the Lenovo Support web site.

http://www.lenovo.com/support/site.wss/document.do?sitestyle=lenovo&lndocid=MIGR-69397



If you are unable to find what you are looking for, please do try the following options:
1. Lenovo Assisted Search
2. Product usage and general troubleshooting tips
3. Lenovo Support Forum
4. Technical Support Call Centre

Country Availability
AvailableWorldwide
Document ID : HT002064
Legacy Document ID : SF08-D0163
Last Updated : 22 Nov 2012
Copyright © Lenovo 2013, all rights reserved
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