HP Workstation x4000 hp workstation x4000 - Technical Reference manual - Windo - Page 59

System BIOS and Resources BIOS Beep Codes BIOS Beep Codes If a terminal error occurs during POST, the system issues a beep code before attempting to display the error in the upper left corner of the screen. Beep codes are useful for identifying the error when the system is unable to display the error message. Beep Code Numeric Code Description 1-2-2-3 1 1-3-1-1 1-2 1-3-1-3 1-3-3-1 1-3-4-1 1-3-4-3 2-1-2-3 2-2-3-1 4-4-2-4 16h BIOS ROM checksum failure B4h one short beep before boot 20h DRAM refresh test failure 98h Video configuration failure or option ROMs checksum failure 22h 8742 Keyboard controller test failure 28h Memory initialization failure 2Ch RAM failure on address line xxxxa 2Eh RAM failure on data bits xxxx1 of low byte of memory bus 46h ROM copyright notice check failure 58h Unexpected interrupts test failure F7 Crisis Recovery Failure a. If the BIOS detects error 2C or 2E (base 512K RAM error), it displays an additional word-bitmap (xxxx) indicating the address line or bits that failed. For example, "2C 0002" means address line 1 (bit one set) has failed. "2E 1020" means data bits 12 and 5 (bits 12 and 5 set) have failed in the lower 16 bits. Chapter 4 59