Technical information

Appendix D. Error Codes
Appendix D. Error Codes
The following tables list the POST error codes and beep error codes for the computer.
POST Error Codes
POST error messages appear when POST finds problems with the hardware during power-on or when a
change in the hardware configuration is found. POST error messages are 3-, 4-, 5-, 8-, or 12-character
alphanumeric messages. An x in an error message can represent any number.
Table 55 (Page 1 of 2). POST Error Codes
Code Description
101 Interrupt failure
102 Timer failure
103 Timer-interrupt failure
104 Protected mode failure
105 Last 8042 command not accepted – keyboard failure
106 System board failure
108 Timer bus failure
109 Low MB chip select test
110 System board parity error 1 (system board parity latch set)
111 I/O parity error 2 (I/O channel check latch set)
112 I/O channel check error
113 I/O channel check error
114 External ROM checksum error
115 DMA error
116 System board port read/write error
120 Microprocessor test error
121 Hardware error
151 Real time clock failure
161 Bad CMOS Battery
162 CMOS RAM checksum/configuration error
163 Clock not updating
164 CMOS RAM memory size does not match
167 Clock not updating
175 Riser card or system board error
176 System cover has been removed
177 Corrupted administrator password
178 Riser card or system board error
183 Administrator password has been set and must be entered
184 Password removed due to checksum error
185 Corrupted boot sequence
186 System board or hardware security error
189 More than three password attempts were made to access system
201 Memory data error
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