5-14 Problem SolvingError MessagesThis section describes the POST error codes and messages.POST Error Codes and MessagesWhenever a recoverable error occurs during POST, BIOS displays a message on thevideo display screen and causes the speaker to beep as the message appears. BIOS alsoissues a beep code (one long tone followed by two short tones) during POST if thevideo configuration fails or if an external ROM module does not have the correctchecksum. The BIOS indicates errors by writing an error code to the PS/2-standardlogging area in the Extended BIOS Data Area, and by displaying a message on thescreen, which is sometimes preceded by the POST Error Code. The error code will alsobe logged to the Event Logging area.Table 5-1 POST Error Codes and Messages is a list of the error codes and messageswritten at the start of each POST test. Table 5-2 POST Error Beep Codes is a list ofbeep codes issued for each POST test. The devices associated with the POST errorcodes are shown in subsection POST Error Code Hardware References that follow.Table 5-1. POST Error Codes and MessagesOn-screen error message Action100 Timer Channel 2 Error101 Master Interrupt Controller102 Slave Interrupt Controller103 CMOS Battery FailureContact your service representative to replace the systemboard.104 CMOS Option not Set Contact your service representative to replace the systemboard. (Restart the computer, and then execute SETUP tocorrect the setting.)105 CMOS/GPNV Checksum Bad Execute SETUP to correct the setting.106 CMOS Display Error Contact your service representative to replace the systemboard.107 Insert Key Pressed108 Keyboard Locked MessageRelease the key.Reconnect the keyboard.109 Keyboard Stuck Key Release the key. Try a different keyboard.If the problem persists, contact your service representativeto replace the system board.10A Keyboard Interface Error Reconnect the keyboard. Try a different keyboard.If the problem persists, contact your servicerepresentative to replace the system board.10B System Memory Size Error Install the DIMMs correctly.Check if all the installed DIMMs are the same specification.Contact your service representative to replace the DIMMs.
