HOW TO INSTALL WINDOWS WITHOUT USING CD/DVD

1) First of all You need .iso (Image File ). (You can Download it from Microsoft official Site (http://windows.microsoft.com/en-in/windows/buy?ocid=GA8...)
Piracy is not appreciated )

2) Now you need any iso tool , I prefer Power ISO (http://www.poweriso.com/download.htm)

3) Now You will also need at lest 4gb Reommended 8gb usb flash drive.

4) Run Power Iso in Administrator mode.

5)Then go to TOOLS--> Create a Bootable USB Drive...

6)Browse the .iso file in Source Image file tab.

7)Select the Appropriate Destination Drive and leave rest to defaults.
(Note your usb disk will flashed during this process so data will be lost , taking backup is advised )

8) Click Start and let the process Finish.

9) Now to install Reboot pc and enter BIOS( press f2 or delete when it boots).

10) Now boot priority menu select the USB option and move it to TOP, save changes (f10 generally) and exit.

11) PC will reboot automatically and now your pc will boot from usb to the windows os and then proceed to Installation.