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| Solving computer problems |
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Code | Message | Description |
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0212* | Keyboard Controller Failed | Keyboard controller failed test. May require replacing |
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| keyboard controller. |
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0213 | Keyboard locked - Unlock | Unlock the system to proceed. |
| key switch |
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0220 | Monitor type does not | Monitor type not correctly identified in Setup. |
| match CMOS - Run |
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| SETUP |
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0230* | Shadow Ram Failed at | Shadow RAM failed at offset nnnn of the 64k block at which |
| offset: nnnn | the error was detected. |
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0231* | System RAM Failed at | System RAM failed at offset nnnn of in the 64k block at |
| offset: nnnn | which the error was detected. |
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0232* | Extended RAM Failed at | Extended memory not working or not configured properly at |
| offset: nnnn | offset nnnn. |
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0250 | System battery is | The CMOS clock battery indicator shows the battery is dead. |
| Replace the battery and run Setup to reconfigure the system. | |
| SETUP |
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0251 | System CMOS checksum | System CMOS has been corrupted or modified incorrectly, |
| bad - Default | perhaps by an application program that changes data stored |
| configuration use | in CMOS. The BIOS installed Default Setup Values. If you do |
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| not want these values, enter Setup and enter your own |
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| values. If the error persists, check the system battery or |
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| contact your dealer. |
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0270* | Real time clock error | |
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| repair. |
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0271 | Check date and time | BIOS found date or time out of range and reset the Real |
| settings | |
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0280 | Previous boot incomplete - | Previous POST did not complete successfully. POST loads |
| Default configuration used | default values and offers to run Setup. If the failure was |
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| caused by incorrect values and they are not corrected, the |
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| next boot will likely fail. On systems with control of wait |
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| states, improper Setup settings can also terminate POST and |
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| cause this error on the next boot. Run Setup and verify that |
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| the |
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| the next time the system is booted. |
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0281 | Memory Size found by | Memory size found by POST differed from CMOS. |
| POST differed from CMOS |
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02D0 | System cache error - Cache | RAM cache failed and BIOS disabled the cache. On older |
| disabled | boards, check the cache jumpers. You may have to replace the |
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| cache. See your dealer. A disabled cache slows system |
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| performance considerably. |
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Chapter 3. Solving computer problems 11