HP Brio ba300 hp brio ba300, technical reference manual (product description) - Page 33

Checkpoint Code F4h F5h F6h F7h Initialize boot Clear Huge segment Boot to Mini DOS Boot to Full DOS POST Routine Description BIOS overview 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 Pattern -- -- --- - - -- Beep Code 1-2-2-3 1-3-1-1 1-3-1-3 1-3-3-1 1-3-4-1 1-3-4-3 1-3-4-3 2-1-2-3 2-2-3-1 1-2 1 Numeric Code 16h 20h 22h 2Ch 2Eh Description BIOS ROM check-sum failure DRAM refresh test failure 8042 Keyboard controller test failure RAM module missing or not installed correctly1 RAM failure on address line xxxx2 RAM failure on data bits xxxx2 of low byte of memory bus 30h RAM failure on data bits xxxx2 of high byte of memory bus 46h ROM copyright notice check failure 58h Unexpected interrupts test failure 98h Video configuration failure or option ROMs check-sum failure B4h This does not indicate an error. There is one short beep before system startup. 1.Non-HP memory modules are not supported. Only HP memory modules should be used. 2.If the BIOS detects error 2C or 2E (base 512K RAM error), it displays an additional wordbitmap (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. 33