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Time and date stop when laptop powered off.

Samung R20 Laptop initially had time ''racing '' forward. Time reset and changing internet synch clocks held time correct for about 4 minutes, then it started running at 30 -60 times to fast.
Updated Bios from Samsung, reset clocks and internet synch. Ran fine whilst powered up, but time stops when switched off.

I assume it is the cmos battery which has failed. Laptop is two years old. Never come across a cmos battery packing up in a laptop in over 10 years!
Does anybody know where the cmos battery is located and is my diagnosis correct please?

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It sounds like the cmos batt had the same problem with my desk top once changed cmos batt all was fine .the batt is located on the under side of the laptop you will see some removeable panels just check under these,but be carefull the batt might be soldered in, some are some are not. if soldered in you might want to get a professional to change it as the heat could damage your computer.
hope this helps.

Posted on Apr 29, 2010

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RESETTING THE CLOCK AFTER A TOTAL MEMORY LOSS

If you do not change the built in lithium battery within a reasonable period of time after you see the ‘flashing’ LOW BATT. warning indicator, the lithium battery may become exhausted and will no longer be able to supply back up power to the SmartSet internal computer.

If the unit is disconnected from the AC outlet after the battery is exhausted, or if a power interruption occurs, the SmartSet memory will be lost and the clock will need to be reset when the power is restored. Be sure to install a fresh lithium battery before you reset the clock, otherwise the clock will need to be reset each time the power is interrupted.

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1.) Install a new CR2430 lithium battery in the battery compartment.

2.) Connect the radio to your AC outlet and let the clock set itself.

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IMPORTANT NOTE:
After resetting the clock, don’t forget to reset your wake up times, and alarm mode settings, and sleep timer settings as well.

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