Unable to turn OFF Samsung ATIV S Windows 8 Mobile

I tried to turn OFF Samsung ATIV S Windows 8 Mobile. I pressed the power button, but it is not switching OFF. It turns OFF when the battery discharges. This is my problem. Please, anyone give me the solution. Thank you in advance. Thank you!

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Hi,

The problem in general view is of a malfunctioned Off/On Switch which need to be changed.

But the problem also can be of the circuit inside or the software .

in any case you should contact your nearest Service Center to repair the handset at the earliest and enjoy the warranty.

Thanks.