HP ML115 HP ProLiant ML115 Generation 5 Server Maintenance and Service Guide - Page 81

Power-On Self-Test (POST) Before you can use a server, all devices must be tested and initialized, and the operating system must be bootstrapped to the memory. This is referred to as Power-On Self-Test or POST. POST is a series of diagnostic tests that checks firmware and hardware components on the system to ensure that the server is properly functioning. This diagnostic function automatically runs each time the server is powered on. These diagnostics, which reside in the BIOS ROM, isolate server-related logic failures and indicate the board or component that you need to replace, as indicated by the error messages. Most server hardware failures will be accurately isolated during POST. The number of tests displayed depends on the configuration of the server. During POST you can: • Press ESC to skip the HP logo and go to POST boot progress display system summary screen. • Press F10 to access the Setup Utility. • Press F12 to request a network boot (PXE). POST Error Indicators When POST detects a system failure, it displays a POST error message. POST Errors Message Definition Whenever a non-fatal error occurs during POST, an error message describing the problem appears onscreen. These error messages are displayed in normal video (white text on black background), and show the details of the error. The following is an example of a POST error message: 012 --- CMOS Date/Time not set Table 10 lists the most common POST error messages with corresponding troubleshooting recommendation. HP recommends that you correct the error, even if the server appears to boot successfully. Table 10 POST Error Messages Error-Code 000 003 004 005 Error Message Description / Corrective Action Timer Error Indicates an error while programming the count register of channel 2 of the 8254 timer. This may indicate a problem with system hardware. Requires repair of the system board. CMOS Battery Low CMOS Battery is low. This message usually indicates that the CMOS battery needs to be replaced. It could also appear when the users intentionally discharge the CMOS battery. CMOS setting Wrong CMOS settings are invalid. This error can be resolved by using F9 to load optimal default in the Setup Utility. CMOS checksum bad and boot in a safe configuration please reboot again for optimal default settings. CMOS contents failed the Checksum check. Indicates that the CMOS data has been changed by a program other than the BIOS or that the CMOS is not retaining its data due to malfunction. This error can be resolved by using F9 to load optimal default in the Setup Utility. Diagnostic tools and Setup Utilities 81