4 Error Messages and Beep Codes
What This Chapter Contains |
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4.1 | Speaker | 67 |
4.2 | BIOS Beep Codes | 67 |
4.3 | BIOS Error Messages | 67 |
4.4 | Port 80h POST Codes | 68 |
4.1Speaker
The
For information about | Refer to |
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The location of the onboard speaker | Figure 1, page 12 |
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4.2BIOS Beep Codes
Whenever a recoverable error occurs during POST, the BIOS displays an error message describing the problem (see Table 34).
Table 34. Beep Codes
Type | Pattern | Frequency | |
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Memory error | Three long beeps | 1280 Hz |
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Thermal warning | Four alternating beeps: | High tone: | 2000 Hz |
| High tone, low tone, high tone, low tone | Low tone: | 1600 Hz |
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4.3BIOS Error Messages
Table 35 lists the error messages and provides a brief description of each.
Table 35. BIOS Error Messages
Error Message | Explanation |
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CMOS Battery Low | The battery may be losing power. Replace the battery soon. |
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CMOS Checksum Bad | The CMOS checksum is incorrect. CMOS memory may have been |
| corrupted. Run Setup to reset values. |
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Memory Size Decreased | Memory size has decreased since the last boot. If no memory |
| was removed, then memory may be bad. |
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No Boot Device Available | System did not find a device to boot. |
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