Lenovo ThinkCentre M57 Hardware Maintenance Manual - Page 84

Beep symptoms Beep symptoms are tones or a series of tones separated by pauses (intervals without sound) during POST. The following tables describes beep symptoms. Beep Symptom 2 short beeps CMOS setting error 1 long and 2 short beeps Monitor or video adapter card error 1 long and 3 short beeps Keyboard error 1 long and 9 short beeps BIOS ROM error Continuos long beeps DRAM memory error FRU/Action Perform the following actions in order. 1. Start the Setup Utility program and press F10 to Save and exit. See Chapter 6, "Using the Setup Utility," on page 51. 2. Start the Setup Utility program and press F7 to load defaults and then press F10 to Save and exit. 3. Perform a Boot block recovery. See "Recovering from a POST/BIOS update failure" on page 442. Perform the following actions in order. 1. Make sure the monitor is properly connected to the computer. 2. Replace the video adapter card (if present). 3. Replace the system board. Perform the following actions in order. 1. Make sure the keyboard is properly connected to the keyboard connector. 2. Replace the keyboard. 3. Replace the system board. Perform the following actions in order. 1. Start the Setup Utility program and press F7 to load defaults and then press F10 to Save and exit. See Chapter 6, "Using the Setup Utility," on page 51. 2. Perform a Boot block recovery. See "Recovering from a POST/BIOS update failure" on page 442. 3. Replace the system board. Perform the following actions in order. 1. Make sure the memory module(s) are properly seated in the connector(s). 2. Replace the memory module(s). 3. Replace the system board. 78 Hardware Maintenance Manual