HP Vectra XA 5/xxx HP Vectra xA 5/XXX Series 5 /vl 5/xxx series 5 pc Technical - Page 90

5 Power-On Self-Test and Error Messages Beep Codes Beep Codes If a terminal error occurs during POST, the system issues a beep code before attempting to display the error. Beep codes are useful for identifying the error when the system is unable to display the error message. Beep Pattern Beep Numeric Code1 Code Description - 1 B4h This does not indicate an error. There is one short beep before system startup. - -- 02 98h Video configuration failure or option ROMs check-sum failure - -- -- --- 0223 16h BIOS ROM check-sum failure - --- - - 0300 20h DRAM refresh test failure - --- - --- 0303 22h 8742 Keyboard controller test failure - --- ---- - 0340 2Ch RAM failure 0343 2Eh RAM failure on data bits in low byte of memory bus 0400 30h 2023 46h RAM failure on data bits in high byte of memory bus ROM copyright notice check failure -- -- --- - 2230 58h Unexpected interrupts test failure - -- - -- -- 02022 Continuous beeps. Keyboard error 1.Where digits 1, 2, 3, 4 represent the number of short beeps, and 0 represents the occurrence of a single long beep. Lights on the Status Panel When the computer is first powered on, the power-on light on the status panel illuminates yellow for about a second before changing to green. This change of color is caused by the execution of an instruction early in the System BIOS code. If the light remains at yellow, therefore, it indicates a failure of the processor or the System ROM in the instruction-fetch process. Check that the processor is correctly seated in its socket, and that its VRM is also correctly seated. 90