i am going to tell that how you can change your pc’s window without using disc. You can install it using usb stick (pen drive) .firstly you have to download the image of operating system which you want to install. Now you have to download software which makes your usb bootable.
Now insert your pen drive in pc’s slot and go to my computer. After it format usb with NTFS partition.after formatting it open software that will make it bootable. Select the option “create bootable usb” and now select the image location and click start button. When it completes ,eject usb and shutdown the pc .restart pc and click esc button before existing windows start it’s working. Chose boot the usb option and your window installation will be start.
This is useful for those pc which doesn’t have writer
I hope this will be helpful
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