Error Messages and Beep Codes
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BIOS Error Messages (continued)

Error Message Explanation
DMA Error Error in the DMA controller.
DMA #1 Error Error in the first DMA channel.
DMA #2 Error Error in the second DMA channel.
FDD Controller Failure The BIOS cannot communicate with the floppy disk drive controller.
After the system is powered down, check all appropriate connections.
HDD Controller Failure The BIOS cannot communicate with the hard disk drive controller. After
the system is powered down, check all appropriate connections.
INTR #1 Error Interrupt channel 1 failed POST.
INTR #2 Error Interrupt channel 2 failed POST.
Invalid Boot Diskette The BIOS can read the disk in floppy drive A:, but cannot boot the
system. Use another boot disk.
Keyboard Is Locked...Unlock It The keyboard lock on the system is engaged. The system must be
unlocked to continue.
Keyboard Error There is a timing problem with the keyboard. Set the Keyboard option in
Standard CMOS Setup to Not Installed to skip the keyboard POST
routines.
KB/Interface Error There is an error in the keyboard connector.
Off Board Parity Error Parity error in memory installed in an expansion slot. The format is:
OFF BOARD PARITY ERROR ADDR (HEX) = (XXXX)
XXXX is the hex address where the error occurred.
On Board Parity Error Parity is not supported on this product, this error will not occur.
Parity Error ???? Parity error in system memory at an unknown address.
4.4 ISA NMI Messages
ISA NMI Message Explanation
Memory Parity Error at xxxxx Memory failed. If the memory location can be determined, it is displayed as
xxxxx. If not, the message is Memory Parity Error ????.
I/O Card Parity Error at
xxxxx An expansion card failed. If the address can be determined, it is displayed
as xxxxx. If not, the message is I/O Card Parity Error ????.
DMA Bus Time-out A device has driven the bus signal for more than 7.8 microseconds.