User's Guide

5-14 Problem Solving
POST Error Codes and Messages
Whenever a recoverable error occurs during POST, BIOS displays a message on the
video display screen and causes the speaker to beep as the message appears. BIOS also
issues a beep code (one long tone followed by two short tones) during POST if the
video configuration fails or if an external ROM module does not a checksum of zero.
The “POST Error Codes and Messages” table is a list of the possible error codes and
messages written at the start of each POST test. The “POST Error Beep Codes” table is
a list of beep codes issued for each POST test. Figure 5-1 shows the location of specific
components referenced in the POST Error Codes and Messages Table.
Table 5-1. POST Error Codes and Messages
Code Error Message
0200 Failure Fixed Disk
0210 Stuck Key
0211 Keyboard error
0212 Keyboard Controller Failed
0213 Keyboard locked - Unlock key switch
0220 Monitor type does not match CMOS - Run SETUP
0230 System RAM Failed at offset
0231 Shadow RAM Failed at offset
0232 Extended RAM Failed at address line
0233 Memory type mixing detected
0234 Single-bit ECC error
0235 Multiple-bit ECC error occurred
0250 System battery is dead - Replace and run SETUP
0251 System CMOS checksum bad - Default configuration used
0260 System timer error
0270 Real time clock error
0271 Check date and time
02B0 Diskette drive A error
02B2 Incorrect Drive A type - run SETUP
02D0 System cache error - Cache disabled
0B1B PCI System Error on Bus/Device/Function
0B1C PCI Parity Error on Bus/Device/Function
0B30 Chassis Fan 1 Alarm occurred
0B31 Chassis Fan 2 Alarm occurred