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Intel Desktop Board DN2800MT Product Guide
Table 17. BIOS Speaker Beep Codes
Type
Video error
Memory error
Thermal trip warning
BIOS Error Messages
The BIOS may also display an error message on the PC monitor when certain
recoverable error occurs during POST. Table 18 gives an explanation of the BIOS error
messages.
Table 18. BIOS Error Messages
Error Message
CMOS Battery Low
CMOS Checksum Bad
Memory Size Decreased
No Boot Device Available
50
Pattern
On-off (1.0 second each) two times, then a
2.5-second pause (off), the entire pattern
repeats (beeps and pause) once and the
BIOS will continue to boot.
On-off (1.0 second each) three times, then
a 2.5-second pause (off), the entire pattern
repeats (beeps and pause) until the system
is powered off.
Alternate high and low beeps (1.0 second
each) for eight beeps followed by system
shut down.
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.
Frequency/Comments
932 Hz
932 Hz
High beep 2000 Hz
Low beep 1500 Hz
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