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Post Error "0197: Unauthorized CMOS change detected" - ThinkCentre M58, M58p

After the system resumes from Sleep mode and the CMOS image was restored using Srwin5C.exe, the user may see the following error message during post:

"0197:System security - Unauthorized CMOS change detected."

Affected configurations

Any of the following systems running Microsoft Windows XP Home, Windows XP Professional or Windows Vista:

  • ThinkCentre M58 (type 6302, 6239, 6258, 6303, 7174, 7244, 7354, 7355, 7360, 7373, 7627, 7628, 7638, 7639, 8910, 9960)
  • ThinkCentre M58p (type 6137, 6138, 6209, 6234, 7188, 7220, 7346, 7347, 7357, 7358, 7483, 7484, 7630, 7635, 9964, 9965)

Note: The systems CMOS image has been restored using the SRWIN5C.EXE utility and the BIOS version is 5CKT42 or older.


Update the system BIOS to version 5CKT44A or newer.

Click here to find the latest BIOS update for your system


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

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Document ID : HT001433
Legacy Document ID : SF09-D0035
Last Updated :
Copyright © Lenovo 2013, all rights reserved
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