Intel Desktop Board D945GCLF Technical Product Specification
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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 31).
NOTE
For Intel Desktop Board D945GCLF, the beep code is only audible through a speaker
connected to the green audio line out connector on the back panel. See Figure 3 on
page 24 for information on the back panel audio connectors.
Table 31. Beep Codes
Type
Pattern
Frequency
Memory error
Three long beeps
1280 Hz
Thermal warning
Four alternating beeps:
High tone, low tone, high tone, low tone
High tone: 2000 Hz
Low tone: 1600 Hz
4.3
BIOS Error Messages
Whenever a recoverable error occurs during POST, the BIOS displays an error
message describing the problem. Table 32 lists the error messages and provides a
brief description of each.
Table 32. BIOS Error Messages
Error Message
Explanation
CMOS Battery Low
The battery may be losing power. Replace the battery soon.
CMOS Checksum Bad
The CMOS checksum is incorrect. CMOS memory may have been
corrupted. Run Setup to reset values.
Memory Size Decreased
Memory size has decreased since the last boot. If no memory
was removed, then memory may be bad.
No Boot Device Available
System did not find a device to boot.