Thank you very much for your reply.
I will surely try Macrium Reflect, I googled a bit about all this and found Paragon & Acronis True Image in the same genre.
My Focus is on creating a backup of OS which can be used when the Default OS fails to load for any reason And
knowing the fact that my Optical Drive is not working so I do not have any support of Backup disks or any kind of optical material, therefore a one key backup residing on the HDD will be very useful for me in such cases. I totally agree with your idea of keeping the image on a separate, external hard drive. Thank you very much.