Chapter 4 118Table 14: Troubleshooting BIOS Beep CodesBoot Block Error Beep CodesThe following table defines beep codes that may occur if a failure occurs while performing a BIOS Boot BlockUpdate.Table 15: Boot Block Error Beep Codes6 8042 Gate A20 test error (cannot switch to protected mode)7 General exception error (processor exception error)8 Display memory error (system video adapter)9 ROM checksum error10 CMOS shutdown register read/write error11 Cache memory test failedNumber of Beeps Troubleshooting Action1, 2 or 3 Reseat the memory, or replace with known good modules.4-7, 9-11 Fatal error indicating a serious problem with the system. Consult your systemmanufacturer.Before declaring the motherboard beyond all hope, eliminate the possibility of interferenceby a malfunctioning add-in card. Remove all expansion cards except the video adapter.If the beep codes are generated even when all other expansion cards are absent, themotherboard has a serious problem. Consult your system manufacturer.If the beep codes are not generated when all other expansion cards are absent, one of theadd-in cards is causing the malfunction. Insert the cards back into the system one at atime until the problem happens again. This will reveal the malfunctioning add-in card.8 If the system video adapter is an add-in card, replace or reseat the video adapter. If thevideo adapter is an integrated part of the system board, the board may be faulty.Number of Beeps Description1 Insert diskette in floppy drive A:2 ‘AMIBOOT.ROM’ file not found in root directory of diskette in A:3 Base Memory error4 Flash Programming successful5 Floppy read error6 Keyboard controller BAT command failed7 No Flash EPROM detected8 Floppy controller failure9 Boot Block BIOS checksum error10 Flash Erase error
