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Table 7. Diagnostic Beep Codes
Beep Description Possible Cause/Troubleshooting
Steps
1 BIOS ROM checksum in progress of
failure.
System board failure, covers BIOS
corruption or ROM error
2 No RAM detected If no memory is detected, you can
perform the following steps:
• reseat the memory if an
additional memory is available
• install that memory if the
issue persists
• issue with the memory
connector
3
• Chipset Error (North and
South Bridge Chipset,
DMA/IMR/Timer Error)
• Time-Of-Day Clock test failure
• Gate A20 failure
• Super I/O chip failure
• Keyboard controller test
failure
System board failure
4 RAM Read/Write failure If no memory is detected, you can
perform the following steps:
• reseat the memory if an
additional memory is available
• install that memory if the
issue persists
• issue with the memory
connector
5 Real-time clock power fail CMOS battery failure. Reseat the
battery. If issue persists, there can be
an issue with the coin-cell battery or
the connector (that will involve
replacing the system board)
6 Video BIOS Test Failure Video card failure
7 Processor Failure Processor failure
8 Display Display failure
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