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Intel Desktop Board D945GCLF2 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 32).
NOTE
For Intel Desktop Board D945GCLF2, 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 32. 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 33 lists the error messages and provides a
brief description of each.
Table 33. 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.