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4 Error Messages and Beep Codes
4.1 BIOS Beep Codes
Table 41. BIOS Beep Codes
Beeps Error Message Description
1 Refresh Failure The memory refresh circuitry on the motherboard is faulty.
2 Parity Error A parity error has been detected.
3 Base 64 KB Memory Failure Memory failure in the first 64 KB.
4 Timer Not Operational Memory failure in the first 64 KB of memory, or Timer 1 on the
motherboard is not functioning.
5 Processor Error The microprocessor on the motherboard generated an error.
6 Gate A20 Failure The keyboard controller might be bad. The BIOS cannot switch
to protected mode.
7 Processor Exception Interrupt
Error
The microprocessor generated an exception interrupt.
8 Display Memory Read/Write
Error
The video adapter is either missing or its memory is faulty.
This is not a fatal error.
9 ROM Checksum Error ROM checksum value does not match the value encoded in
BIOS.
10 CMOS Shutdown Register
Read/Write Error
The shutdown register for CMOS RAM failed.
4.2 PCI Configuration Error Messages
The following PCI messages are displayed as a group with bus, device and function information.
Table 42. PCI Configuration Error Messages
Error Message Explanation
NVRAM Checksum Error, NVRAM
Cleared
The ESCD data was reinitialized because of an NVRAM
checksum error. Try rerunning the ICU.
System Board Device Resource
Conflict
A non Plug and Play ISA card has requested a resource that is
already in use.
Primary Output Device Not Found The designated primary output device (printer, modem, or other, if
output is redirected) could not be found.
Primary Input Device Not Found The designated primary input device (keyboard, mouse, or other,
if input is redirected) could not be found.
Primary Boot Device Not Found The designated primary boot device (hard disk drive, diskette
drive, or CD-ROM drive) could not be found.
continued
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