If a beep code is emitted, write down the series of beeps and then look it up in Table 2-6. If you are unable to resolve the problem by looking up the meaning
of the beep code, use system diagnostics to identify the possible cause. If you are still unable to resolve the problem, see
Table 2-6. System Beep Codes
Code
Cause
1-1-2
CPU register test failure
1-1-3
CMOS write/read test failure
1-1-4
BIOS ROM checksum failure
1-2-1
Programmable interval-timer test failure
1-2-2
DMA initialization failure
1-2-3
DMA page register write/read test failure
1-3-1
Main-memory refresh verification failure
1-3-2
No memory installed
1-3-3
Chip or data line failure in the first 64 KB of
main memory
1-3-4
Odd/even logic failure in the first 64 KB of main
memory
1-4-1
Address line failure in the first 64 KB of main
memory
1-4-2
Parity failure in the first 64 KB of main memory
1-4-3
Fail-safe timer test failure
1-4-4
Software NMI port test failure
2-1-1
Bit failure in the first 64 KB of main memory
through
2-4-4
3-1-1
Slave DMA-register failure
3-1-2
Master DMA-register failure
3-1-3
Master interrupt-mask register test failure
3-1-4
Slave interrupt-mask register failure
3-2-2
Interrupt vector loading failure
3-2-4
Keyboard-controller test failure
3-3-1
CMOS power-fail and checksum checks failure
3-3-2
System configuration check failure
3-3-3
Keyboard controller not detected
3-3-4
Video memory test failure
3-4-1
Screen initialization failure
3-4-2
Screen-retrace test failure
3-4-3
Video ROM search failure
4-2-1
No timer tick
4-2-2
Shutdown test failure
4-2-3
Gate A20 failure
4-2-4
Unexpected interrupt in protected mode
4-3-1
Improperly installed or faulty memory modules
4-3-2
No memory modules installed in bank n
4-3-3
Interval timer channel 2 test failure
4-3-4
Time-of-day clock stopped
4-4-1
Super I/O chip failure; faulty system board
4-4-4
Cache test failure; faulty processor
Warning Messages
A warning message alerts you to a possible problem and prompts you to respond before the system continues a task. For example, before you format a
diskette, a message will warn you that you may lose all data on the diskette. Warning messages usually interrupt the task and require you to respond by
typing y (yes) or n (no).
NOTE:
Warning messages are generated by either the application or the operating system. For more information, see
the documentation that accompanied the operating system or application.
Corrective Action
See
"Troubleshooting the
Processor" in
See
"Getting
Help."
Reflash the BIOS firmware (see
"Getting
See "Getting Help."
See
"Troubleshooting System
Memory" in
See
"Getting
Help."
See
"Troubleshooting the
Keyboard" in
See
"Getting
Help."
See
"Troubleshooting Expansion
See
"Troubleshooting System
Memory" in
Install memory modules of the same type and size in bank n (see
"Installing System
Options").
See
"Getting
Help."
See
"Troubleshooting the System
See
"Getting
Help."
See
"Troubleshooting the
Processor" in
"Getting
Help."
"Troubleshooting Your
System."
Help").
"Troubleshooting Your
System."
"Troubleshooting Your
System."
Cards" in
"Troubleshooting Your
System."
"Troubleshooting Your
System."
"Memory
Battery" in
"Troubleshooting Your
"Troubleshooting Your
System."
"Finding Software
Modules" in
System."
Solutions" and