Filter
Top Products
Chapter 4 85
2-4-1-1 70h Display error messages. • Check the video card.
• Check the main board.
2-4-1-3 72h Check for configuration
errors.
• Check the main board.
2-4-2-1 74h Test real-time clock. • Check the main board.
2-4-2-3 76h Check for keyboard errors. • Check the keyboard.
• Check the keyboard controller.
• Check the main board.
2-4-4-1 7Ch Set up hardware interrupts
vectors.
• Treat as an expansion card problem.
• Check the main board.
2-4-4-3 7Eh Test coprocessor if
present.
• Check the processor.
• Check the main board.
3-1-1-1 80h Disable onboard I/O ports. • Treat as an expansion card problem.
• Check the serial port(s).
• Check the parallel port(s).
• Check the main board.
3-1-1-3 82h Detect and install external
RS232 ports.
• Treat as an expansion card problem.
• Check the serial port(s).
• Check the parallel port(s).
• Check the main board.
3-1-2-1 84h Detect and install external
parallel ports.
• Treat as an expansion card problem.
• Check the serial port(s).
• Check the parallel port(s).
• Check the main board.
3-1-2-3 86h Reinitialize onboard I/O
ports.
• Treat as an expansion card problem.
• Check the serial port(s).
• Check the parallel port(s).
• Check the main board.
3-1-3-1 88h Initialize BIOS data area. • Check the main board.
3-1-3-3 8Ah Initialize extended BIOS
data area.
• Check the main board.
3-1-4-1 8Ch Initialize floppy controller. • Check the HDD.
• Check the floppy disk drive(s).
• Check the main board.
3-2-1-1 90h Initialize hard disk
controller.
• Check the HDD.
• Check the floppy disk drive(s).
• Check the main board.
3-2-1-2 91h Initialize local bus hard
disk controller.
• Check the HDD.
• Check the floppy disk drive(s).
• Check the main board.
3-2-1-3 92h Jump to UserPatch2. • Check the main board.
3-2-2-1 94h Disable A20 address line. • Check the keyboard.
• Check keyboard controller.
• Check the main board.
3-2-2-3 96h Clear huge ES segment
register.
• Check the main board.
3-2-3-1 98h Search for option ROMs. • Check the main board.
Beep Code Post Code Description What to Check (Recommended)