Hi Pradeep, my name is Jose, a Windows user like you. I'll be glad to help you today.
The purpose of system restore point is to go back to that configuration when some software change goes bad.
To create a system restore point please, select Start and type Create a restore point and select it. On the System Protection tab in System Properties, select Create. Type a description and select create. Wait until the process end. Select close button and select Ok button.
Please let me know if you need any further assistance.