Lenovo ThinkCentre M77 Hardware Maintenance Manual (HMM) - ThinkCentre M77 - Page 72
POST Error code, POST Error message, Description/Action, Security EEPROM Block 6 is corrupted.
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POST Error code 0135 0211 0164 1762 1820 1962 0162 0175 0176 0189 POST Error message Fan failure Description/Action The system might be overheating. Press F1 to enter the Setup Utility program. Then press F10 to save and exit the Setup Utility program. Keyboard not found Memory size decreased Note: If the problem is caused by the microprocessor fan, pressing F10 will not solve the problem. This error message is displayed when there is no keyboard detected. This error message is displayed when the memory size has decreased. SATA device configuration change has occurred Press F1 to enter the Setup Utility program. Then press F10 to save and exit the Setup Utility program. This error message is displayed when a hard disk drive or optical drive change has been made. Press F1 to enter the Setup Utility program. Then press F10 to save and exit the Setup Utility program. More than one external fingerprint reader is attached. Power off and remove all but the reader that you set up within your main operating system. If more than one external fingerprint reader is connected to a computer, this error message will be displayed to inform you to remove all of the fingerprint keyboards except the one compatible with the fingerprint application on your computer. No operating system found. Press any key This error occurs only after the POST is completed. to repeat boot sequence. Press any key to repeat boot sequence. Setup data integrity check failure Press F1 to enter the Setup Utility program. Then press F10 to save and exit the Setup Utility program. System Security - Security data corrupted This error indicates that the data stored in the Security EEPROM Block 6 is corrupted. System Security - The system has been tampered with Press F1 to enter the Setup Utility program. Then press F10 to save and exit the Setup Utility program. This error message is displayed when the computer is turned on with the cover open or removed. System Security - Can not read the Security EEPROM Press F1 to enter the Setup Utility program. Then press F10 to save and exit the Setup Utility program. This error message indicates that the Security EEPROM may be broken or removed. Press F1 to enter the Setup Utility program. Then press F10 to save and exit the Setup Utility program. 68 ThinkCentre Hardware Maintenance Manual