Warning 0251-System CMOS checksum bad - default configuration used
Posted: Sunday, 8 May 2011 by Unknown in Labels: battery, chechsum error, cmos, error, faulty, motherboard
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0251-System CMOS checksum bad - default configuration used.
This error creeps up during computer startup.
The main reason for this error are -
1. CMOS battery is discharged/faulty.
In this case the CMOS battery needs to be replaced. This is the reason 99% of the time for this error.
2. CMOS battery connector in motherboard is faulty.
In this case motherboard needs to be replaced or repaired. This is rare and is mostly caused by voltage fluctuation.
This error creeps up during computer startup.
The main reason for this error are -
1. CMOS battery is discharged/faulty.
In this case the CMOS battery needs to be replaced. This is the reason 99% of the time for this error.
2. CMOS battery connector in motherboard is faulty.
In this case motherboard needs to be replaced or repaired. This is rare and is mostly caused by voltage fluctuation.