Lenovo ThinkCentre A52 User Manual - Page 89

POST error codes Each time you power-on the system, it performs a series of tests that check the operation of the system and some options. This series of tests is called the Power-On Self-Test, or POST. POST does the following operations. v Checks some basic system-board operations v Checks the memory operation v Starts the video operation v Verifies that the diskette drive is working v Verifies that the hard disk drive is working If the POST finishes without detecting any problems, a single beep sounds and the first screen of the operating system or application program appears. If the POST detects a problem, an error message appears on the screen. A single problem can cause several error messages to appear. When you correct the cause of the first error message, the other error messages probably will not appear on the screen the next time you turn on the system. In the following index, X can represent any number. POST Error Code 162 Configuration error 164 Memory Size Error 166 Boot Block Check Sum Error 167 No Processor BIOS update found 175 Primary Copy of Secure Data is damaged 176 The System has been tampered with 179 Boot Integrity Services Segment Error 184 Asset Control Antenna not detected 186 Security Hardware Control Logic Error 190 System Security: Invalid Remote Change Requested FRU/Action Select the default settings in BIOS. See Chapter 6, "Using the Setup Utility," on page 53. 1. Run the Extended Memory Diagnostic tests 2. Replace memory modules 1. Perform a flash update to update the BIOS level 2. System board 1. Run Setup. Check Stepping level for the BIOS level needed, then perform the flash update. 2. Replace the microprocessor 1. Run Setup and select default settings 2. System board 1. Covers were removed from the computer 1. Perform a flash update to update the BIOS level 2. System board 1. Make sure Asset Care and Asset ID™ are enabled in Configuration/Setup 2. RFID Antenna 3. Replace system board If problem persists, replace the system board If problem persists, replace the system board Chapter 7. Symptom-to-FRU Index 83