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4
Error Messages and Beep Codes
4.1
Speaker
The board-mounted speaker provides audible error code (beep code) information
during POST.
For information about
The location of the onboard speaker
4.2
BIOS Beep Codes
Whenever a recoverable error occurs during POST, the BIOS causes the board's
speaker to beep an error message describing the problem (see Table 37).
Table 37. Beep Codes
Type
Memory error
Thermal warning
4.3
BIOS Error Messages
Whenever a recoverable error occurs during POST, the BIOS displays an error
message describing the problem. Table 38 lists the error messages and provides a
brief description of each.
Table 38. BIOS Error Messages
Error Message
CMOS Battery Low
CMOS Checksum Bad
Memory Size Decreased
No Boot Device Available
Pattern
Three long beeps
Four alternating beeps:
High tone, low tone, high tone, low tone
Explanation
The battery may be losing power. Replace the battery soon.
The CMOS checksum is incorrect. CMOS memory may have been
corrupted. Run Setup to reset values.
Memory size has decreased since the last boot. If no memory
was removed, then memory may be bad.
System did not find a device to boot.
Refer to
Figure 1, page 11
Frequency
1280 Hz
High tone: 2000 Hz
Low tone: 1600 Hz
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