You said it 'Not able to fix the problem' Extended warranty that send stuff away to third party repairers are a waste of time. That is because there is nothing to repair or parts to repair with. Go to Samsung Tech Support- tell them the tale they will either repair it free - or offer you a replacement for a low price.
Using an Initialize option in the menu
Since Cyber-shot cameras have different menu system layouts, refer to the instruction manual specific for your camera model.
Using a RESET button
Performing a manual power reset
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