NEC MH4500 - Manual (Page 118)

5-16 Solving Problems
Keyboard controller error* The keyboard controller test failed. You may have to replace the
keyboard or controller.
Keyboard error nn The keyboard is not working. BIOS discovered a stuck key and
displays the scan code nn for the stuck key.
Monitor type does not match CMOS
- Run SETUP Monitor type is not correctly identified in Setup.
Operating system not found The operating system cannot be located on either drive A: or drive
C:. Enter Setup and see if the fixed disk and floppy are properly
identified.
Parity Check 1 nnnn*
or
Parity Check 2 nnnn* A parity error was found in the system bus (Parity Check 1) or the
I/O bus (Parity Check 2). BIOS attempts to locate and display the
address on the screen. If it cannot locate the address, it displays.
Press to resume, to
Setup Displayed after any recoverable error message.
Press to enter SETUP Optional message displayed during POST. Can be turned off in
Setup.
Previous boot incomplete - Default
configuration used Previous POST did not successfully complete. POST loads
default values and offers to run Setup. If the failure was caused by
incorrect values and they are not corrected, the next boot will
likely fail. On systems with control of wait states, improper Setup
settings can also terminate POST and cause this error on the next
boot. Run Setup and verify that the wait-state configuration is
correct. This error is cleared the next time the system is booted.
Real time clock error* Real time clock fails BIOS test. May require board repair.
Shadow Ram Failed at offset: nnnn* Shadow RAM failed at offset nnnn of the 64K block at which the
error was detected.
nnnn Shadow RAM Passed Where nnnn is the amount of shadow RAM in kilobytes
successfully tested.
System battery is dead - Replace
and run SETUP The CMOS clock battery indicator shows the battery is dead.
Replace the battery and run Setup to reconfigure the system.
System BIOS shadowed The system BIOS is copied to shadow RAM.
System cache error - Cache
disabled* The RAM cache failed the BIOS test and BIOS has disabled the
cache.
System CMOS checksum bad - run
SETUP The system CMOS has been corrupted or incorrectly modified,
perhaps by an application program that changes data stored in
CMOS. Run Setup and reconfigure the system either by getting
the default values or making your own selections.
System RAM failed at offset: nnnn* The system RAM failed at offset nnnn of the 64K block at which
the error was detected.
nnnn System RAM Passed Where nnnn is the amount of system RAM in kilobytes
successfully tested.
System timer error* The timer test failed. Requires repair of the system board.
UMB upper limit segment address:
nnnn Displays the address nnnn of the upper limit of the Upper Memory
Blocks, indicating released segments of the BIOS which may be
reclaimed by a virtual memory manager.
Video BIOS shadowed The video BIOS is successfully copied to shadow RAM.
* If your system displays this message, write down the message and notify your customer representative. If your system
fails after you made changes in the BIOS Setup menus, you may be able to correct the problem by entering Setup and
restoring the original values.