@RAJUCH2
Your or somebody else installed a Linux distro on this PC and then removed it -- but not properly -- because they left the GRUB boot code in the boot partition.
You can repair that, but you need another PC to download and create boot media.
Macrium Reflect is a free tool that can be used to image and restore PCs, but it also has an option to create Rescue Media (in disk or USB form) that can then be used to Repair your PC.
It is available from here: http://www.macrium.com/reflectfree.aspx
What I recommend is the following:
a) Download and install Macrium Reflect (MR)
b) Use the option to create a boot USB stick or CD
c) Boot your PC from the MR media and select the option to repair the Windows Boot
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